A Massachusetts man has been arrested on suspicion of sending an envelope of white powder addressed to Donald Trump Jr.

Trump Jr.'s wife, Vanessa, was rushed to hospital after she opened the envelope, last month. The powder later turned out to be cornstarch.

Today, Daniel Frisiello, 24, a Catholic charity worker who lives with his parents in Beverly, was arrested and is expected to appear in federal court in Worcester this afternoon.

'These kind of hoaxes may not cause physical harm, but they scare the heck out of people,' said Andrew Lelling, U.S. attorney for Massachusetts.

Daniel Frisiello, (pictured left and in his mugshot, right) of Beverly, was arrested today on suspicion of sending an envelope of white powder to Donald Trump Jr.'s New York City apartment

Vanessa Trump was hospitalized after opening a letter with a white powder inside of it. She's pictured above with her husband, Donald Trump Jr., in April 2016

Federal authorities say Frisiello, who appears to be single, also sent letters containing power to four other people, including a letter to the office of Sen. Debbie Stabenow, of Michigan which referenced disgraced former US gymnastics doctor Dr. Larry Nassar, who has been convicted of abusing his patients.

Antonio Sabato Jr., the Republican former underwear model and soap opera actor who is running for a U.S. House seat in California, also received a letter, as did Stanford University School of Law professor Michele Dauber, and Nicola Hanna, interim U.S. Attorney for the Central District of California.

The envelopes, which all included threatening messages and white substances, were postmarked in Boston.

Frisiello was caught after police connected him to the purchase of a joke glitter bomb which he sent to one of his victims.

U.S. Attorney Andrew E. Lelling told the Boston Herald that federal agents discovered that Dauber had previously posted on social media that she had received a novelty glitter bomb.

'It's something you can send someone that when you open it, glitter comes out. It's like a prank,' Lelling explained. He said that the message in the glitter bomb, matched the message in the letter she received with white powder.

Agents were able to trace the payment details for the glitter bomb back to Frisiello.

Vanessa Trump was at her parents' apartment in a building in Manhattan's Midtown East when she opened the envelope, which was addressed to her husband on February 12.

A Hazmat truck was seen outside Vanessa Trump's parent's apartment building after the incident on February 12

Vanessa looked downcast on the day after the incident (right) while out in New York City, while her husband Trump Jr (left, on a break from jury duty yesterday) was furious

Donald Jr tweeted that he was glad that his wife and children 'are safe and unharmed'

When she found the powder, she reportedly started coughing and feeling nauseous, a source with direct knowledge of the incident told DailyMail.com.

The envelope also included a typed message calling him an 'awful, awful person,' according to court documents.

'I am surprised that your father lets you speak on TV,' the message said. 'You make the family idiot, Eric, look smart.'

'This is the reason why people hate you, so you are getting what you deserve. So shut the (expletive) UP!'

The former model, 40, her mother Bonnie Haydon, who also handled the letter, and another person, were decontaminated and taken to New York Presbyterian-Weill Cornell Medical Center as a precaution, New York City Fire Department officials said.

Frisiello shared a news story about Vanessa Trump receiving the package on the same day it arrived

His social media pages were full of anti-Trump sentiment, and in one case he referred to Trump Jr's brother Eric as a 'tweedle idiot'

Charging documents later revealed the powder was cornstarch.

Frisiello, whose social media pages were full of anti-Trump sentiment, shared a news story about Vanessa Trump receiving the package on the same day it arrived.

He also referred to Trump Jr's brother Eric as a 'tweedle idiot' and talked about his hate for President Donald Trump.

His Facebook also reveals a bizarre fascination with the British Royal Family, with Fisello posting countless photos, news stories and fawning posts about the Royals.

In one case, he said he wished that the UK would bring back the death penalty after sharing a story about a man arrested over a terror incident at Buckingham Palace.

Frisiello (left and right) reportedly sent the letter to president's son on February 12

The FBI's Joint Terrorism Task Force descended on a home in Hathaway Avenue, in Beverly, Massachusetts, where Daniel Frisiello lives with his parents

Stephen and Joyce Frisiello, parents of Daniel Frisiello leave Harold D. Donohue Federal Building and United States Courthouse, following their son's arraignment

The 24-year-old claims to work as a program assistant at Catholic Charities Archdiocese of Boston on Facebook, and reportedly studied legal administration at North Shore Community College.

Today, the FBI's Joint Terrorism Task Force descended on the home in Hathaway Avenue, in Beverly, Massachusetts, where Frisiello lives with his parents.

Lelling said that agents found evidence at the property that Frisello had been sending the letters.

In the trash, they found a printout with a list of people who matched the white powder hoax victims. They also discovered paper with cut outs, which seemed to match the cut-out, printed addresses that were stuck on the envelopes.

Frisiello is charged with mailing threats to injure and providing false information and hoaxes. If convicted, he could face up to a decade behind bars. It could not immediately be determined if he has a lawyer.

In the wake of the hoax on Trump Jr.'s wife, the president's son tweeted his fury over the incident.

His Facebook also reveals a bizarre fascination with the British Royal Family, with Fisello posting countless photos, news stories and fawning posts about the Royals

'Thankful that Vanessa & my children are safe and unharmed after the incredibly scary situation that occurred this morning,' he wrote on February 12.

'Truly disgusting that certain individuals choose to express their opposing views with such disturbing behavior,' Donald Jr added after the incident.

President Donald Trump spoke to his daughter-in-law shortly after she arrived at the hospital.

Donald Jr's sister Ivanka sent her thoughts from Washington, DC.

'Thinking of @MrsVanessaTrump & wishing I was by her side today. No one deserves to be frightened this way. There is no excuse,' she tweeted.

President Trump's personal lawyer, Michael Cohen, weighed in with a statement of his own.

'How disturbed must a person be to do what they did to a mother of five young children? This dangerous and reckless act goes beyond political differences,' Cohen said according to the Post.

The anglophile (pictured with a British flag bedecked cake) lists claims to work as a program assistant at Catholic Charities Archdiocese of Boston

He also talked about his hate for Donald Trump and shared news stories criticizing the president

Although the powder was harmless, the incident recalled the scary days after 9/11 when letters containing lethal anthrax spores were sent to the offices of several politicians and media outlets - resulting in five deaths.

Donald Jr, 40, is the eldest son of President Trump, followed by his sister Ivanka, 36; brother Eric, 34; half-sister Tiffany, 24; and half-brother Barron, 11.

As a child of the president, Donald Jr and his family were assigned a Secret Service detail when his father was elected. He voluntarily gave up his Secret Service protection in September, wanting more privacy, but his detail was reinstated about a week later.

Don Jr and model Vanessa Hayden married in August 2005 at his father's Mar-a-lago estate in Palm Beach, Florida. The pair were actually introduced by the future president when Don Jr attended a fashion show with his father the previous year.

Having met at the beginning of the show, Trump Sr was said to be so smitten with Vanessa that he re-introduced his son to her at intermission.

Sister-in-law Ivanka Trump sent her thoughts from Washington, DC after the incident on Monday

Donald Jr and his wife are pictured above with four of their five children voting on election day in 2016

'Donald comes back up to me again, 'I don't think you've met my son Donald Trump Jr,' Vanessa told The New York Times in 2006. She responded 'Yeah, we just met, five minutes ago'.

The couple finally started a relationship after being introduced a third time at a party by a mutual friend. Trump Jr, then 26, proposed to her in front of a jewelry store, complete with paparazzi, with a $100,000 engagement ring, which he is said to have wrangled for free in return for publicity.

They have five children, daughters Kai, 10, and Chloe, three; and sons Donald III, eight, Tristan, six, and Spencer, five – all of whom regularly feature on Don Jr's Instagram account.

Since his father and sister Ivanka moved to Washington, DC., Donald Jr and his younger brother Eric have taken over control of their family company.

Last year, Eric was sent a threatening letter with a white powder in it to his New York City apartment as well.