At least four people have been killed and dozens have been wounded in a mass shooting involving several assailants in the US state of Alabama.
"We believe that multiple shooters fired multiple shots on a group of people" in the Five Points South district of Birmingham just after 11pm on Saturday (local time), police officer Truman Fitzgerald told local media.
Officers found two adult men and one adult woman who were unresponsive on the sidewalk suffering from a gunshot wound, Fitzgerald said.
All three were pronounced dead at the scene. A fourth person died at a local hospital, he added.
Dozens of people were wounded in the shooting with at least four sustaining life-threatening injuries, Fitzgerald said.
The others had "various injuries", he added.
Police have not taken anyone into custody over the shooting, he said, urging the public to provide any information that could help the investigation.
Several agencies are involved in the investigation, including the Federal Bureau of Investigation and the Bureau of Alcohol, Tobacco, Firearms and Explosives.
Fire rescue services on the scene had cordoned off the area.
This year, there have been at least 403 mass shootings — defined as a shooting involving at least four victims, dead or wounded — across the United States, according to the Gun Violence Archive.
At least 12,416 people have been killed in firearms violence this year in the US, according to the GVA.
