A Florida assistant state attorney has been suspended after posting a Facebook statement linked to last week's Pulse nightclub shooting in Orlando, officials said Friday. On Sunday, gunman Omar Mateen opened fire inside the gay nightclub killing 49 people and injuring several others.

Kenneth Lewis violated the social media policy of the Ninth Judicial Circuit state attorney's office, spokeswoman Angela Starke said. The post slams downtown Orlando as dangerous and says the whole city "should be leveled." He also calls it "a melting pot of 3rd world miscreants and ghetto thugs," WESH-TV reported.

The deadliest mass shooting in modern U.S. history has raised concerns over Islamic terrorism and gun violence. Investigations into the gunman's motive and background are still ongoing, especially given the fact that he was interviewed twice by the FBI a few years ago.

Mateen had pledged allegiance to the Islamic State group, also known as ISIS, hours before the shooting.

The FBI also found that Mateen's internet search history in the weeks leading up to the Pulse attack included searches for Facebook accounts of the suspects in the December 2015 attack in San Bernardino, California, ISIS speeches, the gun store where he purchased the weapons he used in the Orlando shooting, and the Pulse nightclub itself.

On Friday, a shooting survivor told the Associated Press that when he saw a picture of Mateen on television the day after the shooting, he recognized him as the same man he saw having a drink at the bar the previous night.