FBI investigation update

Orlando shooting: FBI questions members of gunman's mosque, dig up school records

Academic records obtained by Reuters showing Mateen was frequently suspended as a student — at least twice for fighting before he was transferred to a special high school for potential drop-outs — added to a disturbing portrait of the gunman who committed the deadliest mass shooting in modern US history.

The 29-year-old private security guard, who was shot dead by police at the end of the June 12 massacre, has been described by his first wife — whom he divorced after a brief marriage — as an abusive, mentally disturbed man with a violent temper.