New South Wales police say two people are in custody following an incident at Bondi beach during which at least a dozen gunshots were fired in the area.

In a statement shared to X at about 7pm on Sunday, police advised there was a “developing incident” at Bondi and they urged the public to avoid the area.

“Anyone at the scene should take shelter,” NSW police said.

“Police are on scene and more information will be provided when it comes to hand.”

In a statement shared about 40 minutes later, police said two people were in custody.

“However, the police operation is ongoing and we continue to urge people to avoid the area,” police said. “Please obey ALL police directions. Do not cross police lines.”

Video seen by Guardian Australia showed two men in black clothes crossing a bridge at Bondi beach and firing. Twelve shots could be heard. People could be heard screaming and one man shouted “fuck”.

The NSW premier, Chris Minns, said “the reports and images coming out of Bondi tonight are deeply distressing”.

“Police and emergency services are responding and the public should follow official advice,” the premier said in a statement.

“We will update the public as soon as more information becomes available.”