A brother of Las Vegas mass shooter Stephen Paddock was arrested in Los Angeles on Wednesday on suspicion of possessing hundreds of images of child pornography, according to authorities.

Bruce Douglas Paddock, 58, was taken into custody at a nursing facility in the 5300 block of Laurel Canyon Boulevard, in the Valley Village neighborhood, and booked at 8 a.m. Television news footage showed Paddock in a wheelchair being loaded into the back of a van by Los Angeles Police Department officers.

Documents filed Tuesday in Los Angeles County Superior Court outlined 20 criminal charges against Paddock, all related to possession of child pornography or the sexual exploitation of children. The felony complaint for the arrest warrant accused Paddock of having more than 600 pornographic images of children or youths, including 10 or more images showing a child younger than 12.

The investigation of Paddock began after evidence was found in a Sun Valley business where he had been squatting, the LAPD said in a statement. The evidence was found after Paddock was evicted, police said.

Paddock was homeless at the time and couldn't be found, the LAPD said, adding that investigations "recently" tracked him to the North Hollywood facility where he was arrested Wednesday....