This is the first picture of a gunman who killed 50 people after storming into a gay nightclub in Florida.
Omar Mateen stormed into the Pulse Club in Orlando, Florida, at about 2am local time today.
He then began shooting at the crowd, killing about 50 people and injuring 53.
Mateen was 29 and was a US citizen who lived in Port St. Lucie.
It is believed he was not on a terrorism watchlist. Police have been investigating possible links to Islamist extremism.
However, it is thought he was being investigated over an unrelated crime.
The shooting happened at the Pulse Club in Orlando causing people to flee in terror.
Eyewitnesses say the attacker stormed the club before shooting at the crowd.
Police have described it as an act of “domestic terrorism” and said it was carefully planned.
The attacker took hostages forcing SWAT teams to enter the club. In total about 20 people have been killed and 42 injured.
