"He was taken into custody this morning for possession of child porn," Officer Aareon Jefferson of the Los Angeles Police Department told People.
According to TMZ, Salling was booked on possession of child porn, specifically porn involving minors "engaging in or simulating sexual conduct."
Bail was set at $20,000 and Salling's family posted it.
Law enforcement sources now tell us they've already seen more than a thousand images of "child sexual exploitation" on Salling's computer. Cops also seized other electronic devices, including tablets and cellphones. We're also told he lives alone, which will make it hard to argue someone else put the images in the computer.
Sources say when cops arrived to search the home, Salling was "shocked."
The law provides if there are more than 600 images, the maximum punishment is 5 years in prison.
The syndicated TV series Crime Watch Daily first reported the arrest. Billy Jensen, a correspondent for the show, told the CBS-owned news-radio station KNX-AM that police reportedly acted on a tip from a friend or "possibly a girlfriend of his,” adding, “As far as what they found, the number is in the hundreds of images. We haven’t heard anything about videos or anything like that."