Karachi: Pakistan's Karachi city witnessed an unruly situation on Friday when a mob stormed the Surjani police station to free a detained person from police custody.

A video going viral on social media showed several policemen inside a police station resorting to heavy firing into the air as several people could be seen standing outside the gate of the police station, reports Dawn News.

West-SSP Faisal Bashir Memon in a statement was quoted as saying by Dawn News that some people attempted to get their ‘accomplice’ freed from the custody of the Surjani police, who fired bullets into the air to disperse the mob.

Four people who had forcibly entered the police station have been arrested, said the SSP statement.