Four brothers were attacked after leaving a Southsea pub.
Hampshire Police revealed today that two of the men suffered serious head injuries in the assault.
A spokesman said: ‘Detectives are appealing for information after four men were assaulted in Southsea on the evening of Saturday, August 22.
‘Shortly after 11.20pm the four men, who are all brothers, had left the Jolly Sailor public house in Clarence Road when two of the brothers were assaulted in an unprovoked attack which led to them sustaining serious head injuries after being punched and knocked to the ground.
‘When the two other brothers tried to intervene they were also assaulted leaving them with minor cuts and abrasions.
‘The main offender was described as being white, aged between 30 and 40-years-old and of a stocky build. He was described as being bald and was wearing a white long sleeve shirt and blue jeans.
‘The other offenders were described as being white and aged between 30 and 40-years-old.’
Detective Constable Heather Hudson from the Eastern Investigation Team said: ‘This was a totally unprovoked attack in which two of the brothers were knocked unconscious and they were set upon by a group of unknown people who repeatedly punched them.
‘At this time people may have been leaving restaurants and bars we would urge people to come forward and help us identify the persons responsible.’