Louisville police said they did not know how the shooter who opened fire Monday morning in a downtown bank, killing five and injuring six, died.

“The shooter was confirmed to be dead on the scene. We do not know exactly the circumstances of his death,” Humphrey said.

At least five people have been killed and six others were taken to the hospital in a mass shooting Monday in downtown Louisville, police said.

Humphrey said an officer was one of the six people injured. The injured people were taken to the University of Louisville Hospital, Humphrey said.

Police had said the suspected shooter was confirmed dead on the scene.

Authorities are investigating the Louisville shooting as a workplace violence situation, according to two senior officials briefed on the incident.

The suspect is believed to be a current or former employee who may have suffered from mental health issues, the officials said. 

Louisville police tweeted that “there is no longer an active aggressor threat” and that the “suspected shooter has been neutralized.”

Multiple casualties were confirmed after a shooting in downtown Louisville on Monday morning, according to police and state officials.

Louisville police warned that an “active aggressor” was on the loose and urged the public to stay away from the area.

Police cars, ambulances and firetrucks flooded Main Street between North Floyd and North Preston streets, in the middle of Kentucky's largest city.

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