Brother of Ft. Lauderdale gunman: FBI knew about my brother and failed to act
Former Army Reserve Combat Engineer Esteban Santiago reportedly gunned down 13 people Friday in Ft. Lauderdale, killing five (Screen capture)

PENUELAS, Puerto Rico (AP) -- The brother of a man accused of killing five people at a Florida airport questioned Saturday why his brother was allowed to keep his gun after U.S. authorities knew he'd become increasingly paranoid and was hearing voices. Esteban Santiago, 26, had trouble controlling his anger after serving in Iraq and told…


Watch video about this story, embedded below: