The teenager killed at a Merseyside New Year's Eve party has been named by police as Jordan Campbell.
Police are searching for witnesses after the 17-year-old was found dead in a burning flat in St Helens at midday on 1 January.
Two men aged 25 and 22 have been arrested on suspicion of murder and are being held by police for questioning.
Police turned up at the flat on Tickle Avenue, St Helens, after a report of an assault.
Officers found smoke coming from the property, originating from a number of small fires burning inside the flat.
The blazes were extinguished by Merseyside Fire and Rescue Service.
Whilst battling the fire, firefighters found the body of the 17-year-old, who paramedics pronounced dead at the scene.
A post-mortem examination is set to be carried out to establish the cause of the teenager's death.
Detective Chief Inspector Sue Coombs of Merseyside Police, said: "We believe there was a New Year's Eve party at the flat which continued into the following morning.
"We have traced some of the people, but we still need to speak to anyone who was there and hasn't come forward yet as they may have vital information which could help our investigation.
"I would appeal to anyone who was at the party or anyone with information about the incident, however small, to get in touch with us as a matter of urgency."
Anyone with information is urged to call detectives in St Helens CID on 0151 777 6811, or via 101, or Crimestoppers, anonymously, on 0800 555 111.Reuse content