Prosper had no history with the local mental health trust. Few details were released in the 10-minute court hearing, but Prosper's internet history - analysed by the BBC - paints a troubling picture.

Officer Andrew Duarte texted his girlfriend a selfie in his police car Saturday moments before he was called into the York County hospital for an active shooter. It showed him wearing a knit cap, ...

An early Monday morning shooting call in Garland escalated into multiple ambushes across a neighborhood over two hours, ...