Timothy Hill stated his brother 20 year old Michael Hill, will “do something stupid”. Michael who allegedly exchanged gunfire with officers inside an Atlanta-area elementary has a long “long history of medical disorders,” according to his brother. Michael will face charges including aggravated assault on a police officer, terroristic threats and possession of a firearm by a convicted felon.

“I honestly can tell you he has got a long history of medical disorders, including bipolar, and that could make you snap on a dime,” Timothy Hill told ABC News. “My moms almost looked like a drugstore at one point. There was so many different medications he was on.”

Read more at abcnews.go.com.