WILTON MANORS, Fla. — Law enforcement officials are investigating threats posted on Facebook to “exterminate” LGBT people living in a predominantly gay city near Fort Lauderdale, Florida.

Wilton Manors Commissioner Justin Flippen says the threat is being taken seriously by the FBI and local police.

The posts mentioned the June 12 attack at Pulse nightclub in Orlando that killed 49 people and injured more than 50.

One post said “if you losers thought the Pulse nightclub shooting was bad, wait till you see what I’m planning for Labor Day.”

Wilton Manors Police Chief Paul O’Connell tells local news outlets the FBI has spoken to the man believed to have made the posts. He says his agency is conducting an “intense investigation.”