At least four people died and 18 others were injured after multiple shooters opened fire at a popular entertainment centre in the US city of Birmingham in Alabama state.

In its X post, Birmingham Police wrote: "BPD officers are on the scene of multiple people shot with possibly multiple casualties." "Five Points South area," the police said.

When officers arrived, they found two men and a woman unresponsive with gunshot wounds, and all three were later pronounced dead on the scene, Birmingham Police Officer Truman Fitzgerald told CNN.

According to reports, another male victim was pronounced dead at the University of Alabama Hospital.

Detectives have started investigating the incident to find the target behind the attack.

No one has been detained so far.

Five Points South is a popular destination in the city which houses restaurants, nightclubs, pubs and live music venues.

It’s unclear exactly how many people opened fire or what motivated the violence. Fitzgerald was quoted as saying by CNN.