Police were called around 6.50 p.m. on Monday 10th April to a report of an aggravated burglary at an address in Scorton Avenue.
It was reported three men had entered a flat and assaulted a man before making off from the scene.
Police attended the incident and spoke with the victim, John Hutchinson, 44, from Blackpool.
Around 9.10 pm, Police were called by the Ambulance Service to the same address with Mr Hutchinson having suffered a suspected cardiac arrest. He was taken to Blackpool Victoria Hospital for treatment, but sadly later died. Following a Home Office post-mortem, it was established he had died from internal injuries after the earlier assault. His next of kin have been informed.
Six people were arrested in connection with the investigation.
Four people have been arrested on suspicion of murder. They are a 33-year-old man from Prescot, a 36-year-old man from Liverpool, a 47-year-old man from Blackpool and a 33-year-old man also from Blackpool.
A 34-year-old woman from Blackpool has been arrested on suspicion of conspiracy to murder.
All five remain in custody.
A 34-year-old man from Blackpool was arrested on suspicion of aggravated burglary and released.
Detectives are urging anyone with information about the attack to come forward.
Det Ch Insp Andy Fallows, of Lancashire Police’s Force Major Investigation Team, said: ‘We have launched a murder investigation following the death of John Hutchinson in Blackpool. Our thoughts are very much with Mr Hutchinson’s family at this very sad and difficult time.
While we have made several arrests, we are very keen to speak to anyone with information or any witnesses who can assist our enquiries. Were you in the Scorton Avenue area around the time of the assault? Did you see anyone in the area acting suspiciously? Please come forward and speak to police.
We are particularly interested in a grey Ford Fiesta car, registration SG18 BGU. We believe this vehicle travelled to Blackpool from the Merseyside area on Monday. This vehicle is now in possession of police but if you saw this vehicle on April 10, please come forward.”
Anyone with information can contact police on 101 quoting log 1207 of April 10.
Alternatively, you can report a crime via independent charity Crimestoppers on 0800 555 111.