An official with the FBI says agents are now searching the family home of a shooting suspect at the centre of Florida's latest mass shooting.
24 year old David Katz of Baltimore is accused of killing two people and injuring nine others after opening fire at a video game tournament at a mall in Jacksonville before taking his own life.
Two others were hurt trying to flee the scene.
Witnesses say Katz was a gamer, who may have lost in the tournament.
Police say Katz was in town for the Madden NFL 19 video game tournament.
The maker of the game, EA Sports, lists a David Katz as the 2017 championship winner.