FOUR police officers were injured after a fight broke out between 30 people inside a nightclub.
Police rushed to Talk, in Lucy Road, Southend, after reports of two men fighting inside the club.
Around 30 people were drawn into the brawl.
Four police officers were injured while they dispersed the fighters. Their injuries were not serious although they did receive treatment from paramedics.
Two members of the club’s door staff were also injured in the fight.
DI Julie Gowen, of Southend CID, said: "We would like to hear from anyone inside the club who may have seen what happened, especially those people who may have seen the assaults on the police officers and door staff.
“This incident ruined what was probably a nice night out for the majority of people with police officers and club staff being injured as a result."
It happened at 2am on Sunday.
Three 25-year-old men from London, a 40-year-old man from London, a 19-year-old man from London, an 18-year-old man from London and a 27-year-old woman from London were all arrested at the scene.
They are being questioned at Southend Police Station.
Anybody with any information is asked to contact Southend CID on Essex Police 101 or Crimestoppers anonymously on 0800 555 111.