A Colorado couple who stayed a year ago at the same resort where three Americans recently died in the Dominican Republic are suing the company over their own experience.

Kaylynn Knull and Tom Schwander of Colorado shared an image from their trip to the Bahia Principe Hotel in La Romana in a post on Instagram on Wednesday, imploring vacationers to be careful as they travel.

Bahia Principe Hotel is the same resort where Maryland couple Cynthia Day, 49, and Nathaniel Holmes, 63, and Pennsylvania's Miranda Schaup-Werner, 41, who all checked in as part of separate parties on same day, were found dead within the last two weeks.

Knull said that last Summer, they checked into a room at the Bahia Principe Hotel that developed a strong smell of chemicals, and they cut their trip short after they experienced abdominal cramps, dizziness, watering eyes, blurred vision and shortness of breath.

'We both woke up soaked in sweat at like four in the morning, and kind of terrified,' Knull said in an interview with Good Morning America. 'We booked a flight home before the sun came up.'

DailyMail.com has reached out to Knull asking for additional details about their lawsuit and it awaiting a reply.

Colorado couple Kaylynn Knull and Tom Schwander, who stayed one year ago at Bahia Principe Hotel in the Dominican Republic, where three Americans recently died, are suing the company over their own terrifying experience. Knull and Schwander are pictured in a throwback photo from the beaches of La Romana, shared on Wednesday

Sharing a throwback photo from the beaches of La Romana on Wednesday, Knull wrote: 'As many of you read the articles about the Dominican Republic I hope you question your next vacation. Last summer Tom and I set out on our dream vacation for two weeks only to come home early sicker than we have ever been and scared for our health.

'After family began to send me articles about the same hotel with people who were having the time of their lives only to be dead days later with no violence but the same symptoms... My heart has sank and I feel a need to speak up about our trip.

'I hope everyone can listen to their intuition and move through harms way unscathed. We were apparently very lucky.....'

Knull said that last Summer, they checked into a room at the Bahia Principe Hotel that developed a strong smell of chemicals, and they cut their trip short after they experienced abdominal cramps, dizziness, watering eyes, blurred vision and shortness of breath. Knull and Schwander are pictured in a photo shared to social media

DailyMail.com has reached out to Knull asking for additional details about their lawsuit and it awaiting a reply. Knull and Schwander are pictured in a photo shared to social media

At the same property, Maryland couple Day and Holmes were found dead inside their hotel room on May 30.

Five days earlier, Schaup-Werner, a psychotherapist from Allentown, Pennsylvania, passed away on May 25 at the all-inclusive hotel after getting a drink from the mini-bar.

The woman and her husband, Daniel Werner, had traveled to the popular tourist destination in the Caribbean to celebrate their ninth wedding anniversary.

The victims were staying in different buildings on the property.

Guests who checked in one day after Maryland couple were found dead were unaware of the tragedy. They told GMA the resort did not tell them anything about it.

Bahia Principe has said it offers a safe and welcoming environment, and that it holds some of the highest certificates in the hospitality industry.

No suspects have been identified related to the deaths, and there has been no evidence of overt violence, Police Colonel Frank Duran told GMA.

An autopsy performed by local authorities determined Schaup-Werner's cause of death to be respiratory failure and pulmonary edema caused by fluid in the lungs.

DailyMail.com on Tuesday afternoon spoke to Jay McDonald, who has been acting as a spokeperson for the woman’s family. McDonald said that to his knowledge, Schaup-Werner had voiced no complaints about her health in the days leading up to her sudden passing.

Bahia Principe Hotel in La Romana is the same resort where Miranda Schaup-Werner, 41 (pictured), collapsed and died inside her room on May 25 and engaged Maryland couple Cynthia Day, 49, and Nathaniel Holmes, 63, were discovered dead inside their room from respiratory failure and pulmonary edema on May 30

Schaup-Werner was staying with her husband, Daniel Werner, at the all-inclusive Bahia Principe resort in La Romana (pictured)

He questioned why there appeared to be no toxicology report done as part of the cause of death inquiry.

He also claimed Shaup-Werner’s glass and drink were not tested amid concerns that she may have been poisoned.

The family are particularly alarmed as the incident came so close, in both place and time, to the deaths of the Maryland couple at the same hotel.

‘We don’t understand what’s going on here,’ McDonald said in a phone interview. ‘We have big questions.’

Five days after Schaup-Werner's death, Maryland couple Cynthia Day, 49, and Nathaniel Holmes, 63, were found dead at the same hotel

When the bodies of engaged couple Day and Holmes were found on May 30, police found bottles of high blood pressure medications in the room.

Autopsies performed on Day and Holmes found their cause of death to be the same as Schaup-Werner: respiratory failure and pulmonary edema.

Family members of all three deceased hotels guests are now demanding answers concerning the circumstances of their deaths at the same resort and under similar conditions less than a week apart.

Schaup-Werner posted photos of the room to her Facebook page, and had been relaxing with a drink from the mini-bar in their room

The hotel confirmed Schaup-Werner’s death in a statement to Fox News, which first reported on the case, saying in part that after the guest was found unresponsive in her room, the hotel doctor responded and had her transported to a hospital in Santo Domingo, where she was pronounced dead on arrival.

The statement made mention of the fact that Schaup-Werner had suffered from heart conditions in the past - a fact that was relayed by her husband during his interview with the local police in the wake of his wife's death.

McDonald, the surviving husband’s brother-in-law, confirmed that Schaup-Werner had been diagnosed with inflammation around the heart 15 years ago - a condition for which she had been successfully treated.

He told DailyMail.com that the reason Schaup-Werner's heart condition had even come up in conversation with police was because her husband was 'casting about' for a possible explanation.

Shortly after having a drink, Schaup-Werner was suddenly struck with acute physical distress, collapsing to the floor. Her husband immediately performed CPR, a family spokesman said

Miranda Schaup-Werner and her husband were celebrating their nine year wedding anniversary at the Bahia Principe Hotel in La Romana, Dominican Republic

‘He was looking for a way to characterize what happened,’ McDonald said. ‘He was just wildly speculating.’

McDonald said that his brother-in-law recounted for him how on May 25, he and his wife were in their room when she drank a travel-size alcoholic beverage and a ginger ale from the mini-bar.

About an hour later, she sat down to take a selfie, then stood up. ‘She started shrieking and she dropped to the floor,’ McDonald earlier told Fox News. ‘He attempted to do CPR, he tried to resuscitate her.’

Paramedics were summoned to the room by hotel workers and administered a shot of epinephrine, which is commonly used to treat allergic reactions.

Werner told the local authorities his wife of nine years had suffered from inflammation around the heart

Schaup-Werner could not be revived and was pronounced dead.

McDonald said, based on his conversations with her husband, that Dominican authorities determined the cause of death following a 'very cursory' investigation.

The family spokesman said when Schaup-Werner’s relatives learned of the deaths of Day and Holmes five days later, they were stunned.

‘We feel for them and understand their shock and horror because we are experiencing the same thing,’ McDonald said. ‘And the situation is so bizarre that it begs comparing notes.’

He said the family contacted the U.S. State Department to express serious concerns over Schaup-Werner’s death and have called for an investigation.

'After learning of the startling similarity to the incident with the Maryland couple just days later at the same resort, family became alarmed about possible implications.

'Why didn’t the deaths of the Maryland couple trigger an investigation, following so closely on Mrs. Shaup-Werner’s death? Have there been other deaths?,' he asked.

McDonald said Schaup-Werner’s body is scheduled to arrive back in the US on Wednesday.

Beyond that, he said her family want US authorities to take over the investigation and have toxicology tests done, which he said had not been done by Dominican authorities.

Based on discussions with a US State Department official, McDonald said he expects the FBI to contact the family in the future.

In describing Schaup-Werner, McDonald said she enjoyed traveling to the Caribbean and clearly enjoyed being in the Dominican Republic.

'She was friendly, she was bubbly, and lively,' he said of his deceased family member. 'She had a lot of life in her.'

Holmes posted that he didn't want to leave his vacation in week they both passed away

Meanwhile, Dominican Republic's national police said on Monday that Day and Holmes suffered from chronic high blood pressure.

'The evidence in the room shows that they might have died from high blood pressure from the heart,' the agency stated, according to CBS News in Baltimore.

'We found a lot of medicine used to treat that illness and according to the medical history the family provided, both of them had high blood pressure,' police said.

Day and Holmes were due to depart one week ago, the same day their bodies were discovered in a room reportedly with 'no signs of violence'.

A hotel worker found them, but it was not reported whether the bottles were empty.

Diario Libre reported that Dominican Republic's National Police found in their investigation Holmes had called for a hotel doctor Thursday morning, complaining that he felt ill.

However, he reportedly refused medical care when they showed up.

Day's sister, Sonya Jackson, told News4's that the US Embassy had confirmed the deaths.

Police said there was no sign of violence in the couple's room.

Holmes' sister said her brother was 'having a great time' when she spoke to him a couple of days ago.

In Facebook images posted on May 28, Holmes said he was having fun. In a caption he declared he'd had the 'boat ride of a lifetime!!!'

He also shared snaps of Day - who has an adult son - posing with a parrot and a monkey: 'On the way to Saona Island with my baby.'

At one point he wrote: 'Can somebody please loan me $250,000 bcuz I don't want to come home!!!!!'

Their bodies were discovered in a room reportedly with 'no signs of violence'. Pictured is an example of a room at the resort

Vacation snaps show them loved up and having fun in the Dominican Republic this week

He also shared snaps of Day - who has an adult son - posing with a parrot and a monkey

US State Department officials have issued a travel advisory for American tourists heading to the DR, telling vacationers to exercise 'increased caution'.

'Violent crime, including armed robbery, homicide and sexual assault is a concern throughout the Dominican Republic,' the advisory stated on April 15. 'The wide availability of weapons, the use and trade of illicit drugs, and a weak criminal justice system contribute to the high level of criminality on the broader scale.'

The US State Department sent its condolences to the couple's families.

'We are in close contact with local authorities regarding their investigation into the cause of death,' the Department said in a statement to ABC News. 'We stand ready to provide all appropriate consular assistance. The U.S. Department of State and our embassies and consulates abroad have no greater responsibility than the protection of U.S. citizens overseas. Out of respect to the family during this difficult time, we have no further comment.'

'Fun in the DR with my baby': Holmes last posted on Facebook on Tuesday, two days before the bodies were found

The resort released this statement saying it is 'deeply saddened' by the couple's deaths

The resort located in Playa Nueva Romana said it is 'deeply saddened by the incident.'

November 2018 pictures show Day and Holmes at the Grand Bahia Principe La Romana. In December images Holmes' is seen visiting family members' grave sites to tell them about his new fiancee, 'I put a ring on it!'

His daughter, Dajuan Holmes-Hamilton, wants to know the facts.

'It should have never happened,' she told NBC4, adding that he was grandfather who was looking forward to visiting her daughter.

The property is located halfway between popular locations Santa Domingo, the capital, and Punta Cana.

Five American tourists have died in the Caribbean country since March.

Dominican Republic police said in April a combination of alcohol, speeding and dark roads may have led to the deaths of a couple from New York who stayed at the Grand Bahia Principe Cayacoa hotel in Samana.

Orlando Moore, 41, and Portia Ravenelle, 52, were believed by authorities to be en route to the airport to return from their vacation at the same brand property when Moore may have lost control and crashed into the Caribbean Sea.

This week, Delaware woman Tammy Lawrence-Daley an attack she experienced in January, during an interview with CBS This Morning.

New York couple Orlando Moore, 41, and Portia Ravenelle, 52, died while on vacation in the Dominican Republic in March

The 51-year-old had been on vacation with her husband at the Majestic Elegance Resort in Punta Cana when she says that she went out alone to get a snack at 10.30pm.

She claims that the man pushed her from behind and she tried to fight him off, only to lose consciousness as he beat her.

She recalls telling her husband that she would be back in five minutes but Lawrence-Daley said she ended up going missing for eight hours.

The woman claims her attacker dragged her down concrete stairs to an underground waste water area in what she says was an attempt to hide her body and mask the sound of the attack.

Lawrence-Daley said: 'Majestic Elegance claims no responsibility for the attack since I couldn't identify the attacker even though he was wearing a uniform with the resort logo and hit me directly in front of the unlocked maintenance room and dragged me down concrete stairs to a basement so that no one could hear or find me.'

Tammy Lawrence-Daley, 51, said she remembers being 'plowed into from behind' and felt her attacker's arms around her as he pulled her into a nearby unlocked maintenance room

Lawrence-Daley claims she was attacked by a hotel employee because she remembers seeing him in a uniform with the resort logo on it



