Officers are investigating a serious assault which took place at Wilmcote House inÂ Tyseley Road, Somers Town, on the evening of Friday, July 20.
Two men from Southsea, agedÂ 18Â and 28, wereÂ arrested on suspicion of attempted murder.Â The 28-year-old was arrested on suspicion of committing an act / series of acts with intent to pervert the course of justice.
18-year-old man, 28-year-old man, and a 37-year-old woman, all from Southsea, who were arrested in connection with the incident have been released from custody but remain under investigation.
A 32-year-old man who was also arrested and released from custody,Â has been released with no further action to be taken.
Any with any information should contact Hampshire Constabulary on 101, quoting the crime reference number 44180274847.