Four young men were arrested following an incident outside the Sir Henry Gurnett pub in Romford Road, Aveley on Saturday evening (October 9).
Police were called by concerned members of the public around 11.45pm and found a large group of teenagers who were believed to have caused damage to property and been involved in a fight.
Two juveniles were taken to hospital for treatment to injuries. Those arrested are aged between 16 and 17 and from Aveley.
They have been questioned on suspicion of being involved in criminal damage, affray, and assault and have been released on police bail until November 16 while police continue to investigate the circumstances.
Anyone with information is asked to contact police at South Ockendon police station on 0300 333 4444.