Interrogation Footage Reveals Disturbing Details About Perry Hall Shooter

Editor's Note: The videos attached to this post contain graphic language and content that may not be suitable for everyone.

Following the sentencing of convicted Perry Hall High School shooter Robert Gladden, the Baltimore County states attorney's office released video of the troubled teen's interrogation, which occurred shortly after his arrest.

Speaking to two sets of investigators, Gladden, 15, describes the shooting in detail: how he hid the gun in his backpack, told two friends to leave the cafeteria, assembled the weapon in a bathroom, walked back into the school's cafeteria and opened fire and how a guidance counselor pinned him against a vending machine bringing the shooting to a stop.

In the first of the videos, the time is noted as 3:30 p.m. Aug. 27—hours after the shooting occurred.

At one point, asked by investigators when he started to have suicidal thoughts, Gladden replies, "fourth grade."

Investigators asked him whether he would repeat his actions and Gladden replies, on separate occasions, that if he could change the past he would have fired the first shot then turned the weapon on himself or that he would simply have taken his own life.

Gladden was recently sentenced to 35 years in prison.