Police investigating the 'unexplained death' of an 18-year-old in Portsmouth have said a post mortem result was 'inconclusive'.
Ollie Blatcher's death on Saturday sparked a murder investigation after he was found injured at an address Sackville Street, Southsea.
The teenager, of Estella Road, Buckland, later died at Queen Alexandra Hospital, in Cosham.
Paramedics had been called to Sackville Street at around 1.54am.
Last night friends of the teenager released balloons in the road in his memory.
Today Hampshire police confirmed his identity.
A police spokeswoman said: 'A post mortem examination has been carried out, however the findings are inconclusive. Further tests will be carried out.
'Detectives continue to work hard to establish the exact circumstances surrounding the man's unexplained death, and the investigation is on-going.
'Specialist officers continue to support the family at this difficult time.'
Two men arrested on suspicion of murder have been released but remain under investigation.
The spokeswoman added: 'A 28-year-old man and a 32-year-old man who were arrested in connection with the death have been released from custody, but remain under investigation.'