Kajang district police chief Zaid Hassan said the incident was sparked by a drunk man who approached a burger seller before hurling vulgarities and a beer can at him.

“The drunk man then brandished a retractable knife and a parang and tried to attack the burger seller.

“This led to other men intervening to stop the fight,” said Zaid in a statement.

The four, aged between 28 and 41, were later nabbed to facilitate investigations. They were placed under a four-day remand until March 27.

Police also confiscated the weapons.

The case is being probed for rioting.