A call about an incident with several shots was received shortly after midnight by the Baltimore police, in the state of Maryland, USA, American media reported, citing a police representative.

According to the American networks, there are at least four dead and 30 injured.

A police officer at the scene said at least 30 people had been taken to hospital.

Hundreds of people – according to witnesses – had gathered in south Baltimore, near the Brooklyn Homes district, where an event called “Brooklyn Day” was being held.

Witnesses told Fox 45 News they heard 20 to 30 gunshots.