An FBI spokeswoman confirmed to CBS News that federal officials assisted the Los Angeles Police Department Wednesday in arresting Bruce Paddock.
This is a developing story.
According to TMZ, police were tipped off that there was child porn on Bruce Paddock's computer and obtained a search warrant.
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It wasn't immediately known if he has an attorney.
The brother of the gunman behind the worst mass shooting in recent US history was arrested Wednesday in Los Angeles on suspicion of having child pornography, police sources confirm. "Paddock had been squatting inside the business and after his eviction, the evidence was discovered". The official said the child porn case predates the shooting.
According to ABC News, Paddock is thought to have removed the hard drive from the laptop before fatally shooting himself following the massacre.
At the time, Bruce Paddock was a transient and couldn't be found, police said.
Bruce Paddock has previous convictions for vandalism, criminal threats and theft, NBC reported, citing court records.