Mandalay Bay Hotel
Bruce Paddock reportedly bragged about being the brother of Stephen Paddock, the gunman who killed 58 people and injured hundreds from the his hotel room. The hotel is pictured on Oct. 4 in Las Vegas, Nevada. Getty Images

In the wake of the deadliest mass shooting in modern United States history, the brother of gunman Stephen Paddock reportedly bragged about their relationship, leading to his arrest on charges of child pornography.

Bruce Paddock, 59, boasted to residents at the Los Angeles Assisted Living Home in North Hollywood, that his brother was the gunman who opened fire on concert-goers in October, killing at least 59 people and injuring hundreds more in Las Vegas, TMZ reported Thursday.

A worker at the assisted living facility who overheard his comments checked his files and discovered that Stephen Paddock was listed as an emergency contact and informed the Los Angeles Police Department, hoping that authorities would be interested in talking to Bruce Paddock about his brother.

After authorities conducted a background check on Bruce Paddock, they found an active warrant from a 2014 child pornography case. He was arrested on Oct. 25, according to TMZ.

Bruce Paddock was apprehended at the assisted living facility located at 5300 block of Laurel Canyon Boulevard in the Valley Village neighborhood. He was booked into jail shortly after for possession of more than 600 images of child or youth pornography.

The evidence was first discovered after Bruce Paddock was evicted from the office building of a business in the Sun Valley section of Los Angeles, where he had been squatting, police said. He was homeless at the time and his whereabouts were unknown until authorities learned he was living at the North Hollywood facility.

One felony count of possession of child or youth pornography and 19 counts of sexual exploitation of a child were pending against Bruce Paddock. He has also had several run-ins with local law enforcement over a 25-year span, according to reports.

His brother, Stephen Paddock, 64, killed 59 people and injured over 500 Oct. 1 when he opened fire on concert-goers at a country music festival from the 32nd floor of his room at the Mandalay Bay Hotel on the Las Vegas Strip. Paddock had meticulously planned the attack, killing hundreds before he shot and killed himself. His motive remained unknown.

Stephen Paddock
Paddock committed the deadliest mass shooting in modern U.S. history Sunday night when he shot into a crowd killing 49 people and wounding over 500.