The longtime friend of a Canadian man who apparently confessed to shooting dead his daughter, wife and sister in a disturbing Facebook status said he didn't believe the post was real - until he saw that it was signed with the father's nickname.

Brian Jones said he thought he was going to throw up when he saw that the message from pal, Randy Janzen was signed Daddio - his 'signature nickname'.

After reading the status, Jones and a friend rushed to check on Janzen's sister at her home in Langley, B.C.

'Triple homicide': Randy Janzen (right) has apparently confessed to shooting dead his teenage daughter, Emily (center), wife, Laurel (left), and sister, Shelly, at two homes in Canada in a chilling Facebook post

Chilling: In the online post (pictured), Janzen seemingly writes that his torment over by his 19-year-old daughter's debilitating migraines has led him to fatally shoot her in the head at a house in British Columbia

Longtime friend Brian Jones said he thought he was going to throw up when he saw that the message from pal, Randy Janzen was signed Daddio - his 'signature nickname'

When they arrived they saw a stack of newspapers, dating back three days and despite there being a car in the driveway, nobody answered the door.

Jones immediately went to the police, who said they had been receiving calls about the Facebook post.

'We knew something was very seriously wrong,' he said. 'Deep down, I knew it was real,' he told the Toronto Star.

In the disturbing online post that sparked Jones' panic, Janzen calmly explains that he has killed his 19-year-old daughter Emily because he couldn't watch her suffer debilitating migraines anymore.

He then admits that he has gunned down his wife, Laurel, 'because a mother should never have [to] hear the news her baby has died', and his sister, Shelly, so that she did not 'have to live with this shame'.

Shortly after the post was uploaded to the social network on Thursday, investigators confirmed a multiple homicide involving relatives had taken place at two different residences in the province.

Jones said Ranzen had become 'consumed' with his daughter's terrible migraines. 'He couldn't stand to see her suffer,' he said

Couple: In the post, Janzen adds that he gunned down his wife (seen with Janzen) 'because a mother should never have [to] hear the news her baby has died', and his sister so she did not 'have to live with this shame'

Burned: Shortly after the post was uploaded to the social network on Thursday, investigators confirmed a multiple homicide involving relatives had taken place. Following the shootings, police surrounded one of the two residences and fired distraction devices into it. The house shortly exploded into flames (pictured)

At around 3pm on Thursday, police learned from a tip that a man had possibly killed his relatives and rushed to the Langley property, where someone was found dead inside, CBC reported.

A second tip sparked concerns about the property that was reportedly owned by Janzen in Llanberis Way, east of Chilliwack, where neighbors apparently heard a series of gunshots followed by 'a loud bang'.

A SWAT team surrounded the house and a standoff ensued. Around four hours later, officials fired distraction devices into the house, which quickly set ablaze and exploded.

Janzen is believed to have killed himself during the police standoff, according to The Province.

Although the man and the victims are yet to be formally identified, Janzen owned the home that exploded on Llanberis Way in Rosedale and neighbors said a family of three lived at the property.

Jones is still trying to fathom how his 'gentle' friend could possibly be linked to such a gruesome crime. He said he didn't even know his friend owned a gun.

Police: Although the man and the victims are yet to be formally identified, Janzen owned the home that exploded on Llanberis Way in Rosedale. Neighbors said a family of three lived at the house (seen far left)

'He never hurt a fly is his whole life,' Jones said. 'When we were all young and getting in fist fights, Randy didn't do that.'

'He wasn't a monster.'

But Jones said his friend had become 'consumed' with his daughter's terrible migraines.

'He couldn't stand to see her suffer,' he said.

The post Janzen supposedly wrote discusses his 'dear, sweet, loving' daughter Emily and her migraines at length.

'The best little girl two parents could ever hope for,' he apparently writes.

'Emily excelled at so many things but slowly had to stop almost everything because of the migraines.'

'I don't think anyone really knew how much pain Emily was in on a daily basis and the severe depression that these migraines caused her.'

'Emily had tried everything to get better but nothing seemed to help her. I took a gun and shot her in the head and now she is migraine free and floating in the clouds on a sunny afternoon.'

He adds: 'Then I shot Laurel because a mother should never have [to] hear the news her baby has died.'

'Victims': Janzen is believed to have killed himself during the police standoff. It is not yet confirmed that he wrote the post that appeared on his Facebook page.Above, Emily is pictured with her mother, Laurel

On Friday, an Integrated Homicide Investigation Team spokeswoman said: 'It’s believed that several members of one family including the suspect are deceased.' Above, Emily (left) and Janzen (right) in Facebook photos

Chilliwack School of Performing Arts posted a heartbreaking public message on its Facebook page about Emily, describing her as 'incomparable' former student with a 'bright smile, beautiful voice and amazing spirit

'Then a couple of days later my sister Shelly because I did not want her to have to live with this shame I have caused all alone. Now my family is pain free (sic) and in heaven.'

Janzen seemingly concludes the post with the words: 'I am taking full responsibility for my actions of these murders. So sorry to anyone I have hurt. Rest in peace my little family. Love Daddio.'

Shane Dwight had only kept up with his friend via social media in the last decade, but said he knew Janzen's daughter 'was everything to him'.

'She was going to become a famous opera singer,' Dwight said.

'But I guess that last year or two, the migraines and depression became so severe that he just couldn't take it anymore.'

On Friday morning, the Chilliwack School of Performing Arts posted a heartbreaking public message on its Facebook page about Emily, describing her as 'incomparable' former student.

It said: 'Today we celebrate the incomparable Emily Janzen. A former student and instructor, forever a part of our CSOPA family.'

'We will fondly remember her bright smile, beautiful voice and amazing spirit. She will be greatly missed. Our condolences go out to all her family and friends.'

Last month, Emily, a talented singer, tweeted in apparent reference to her migraines: 'Whenever I start to feel sorry for myself, I just thank God I’m still alive.'

An investigation is ongoing.

Relatives: Emily and her mother, Laurel, are both believed to have been shot dead by Janzen on Thursday