The Louisville Metropolitan Police Department says there are “multiple casualties” in the Kentucky city Monday as officers are responding to “reports of an active aggressor.” 

“We are confirming reports of an active aggressor in the 300 block of East Main. Please stay out of the area,” police said in tweet. “There are multiple casualties.” 

Images taken in the area showed a police officer with his weapon drawn. The shooting happened at a building that houses an Old National Bank location, according to the Associated Press.

“Please pray for all of the families impacted and for the city of Louisville,” Gov. Andy Beshear said in a tweet, adding that he is heading there now.

Agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) also were photographed at the scene.

The FBI's Louisville office tweeted that its “special agents have responded to the scene of this morning's shooting in downtown Louisville and are assisting our law enforcement partners.”