Hayley Tsukayama Mark Berman Jerry Markon The Washington Post

A gunman who pledged allegiance to the Islamic State opened fire inside a crowded gay bar and dance club here early Sunday, leaving 50 people dead and 53 injured in the deadliest mass shooting in U.S. history, authorities said.

A gunman who pledged allegiance to the Islamic State opened fire inside a crowded gay bar and dance club here early Sunday, leaving 50 people dead and 53 injured in the deadliest mass shooting in U.S. history, authorities said.