Two men and two women, aged 19 and 20, were arrested today after Peter Brocklesby was attacked in Brooklyn Road, Cleckheaton, some time before 12.50am on Saturday.
West Yorkshire Police said arrests of a 19-year-old man and a 20-year-old woman at an address in the Castleford area at 12.10am today followed them holding a 19-year-old man on Saturday afternoon. Yesterday, the force said a 19-year-old woman had been arrested.
A force spokesman said: “The identity of the deceased man has been confirmed as Peter Brocklesby, of Brooklyn Road, Cleckheaton.”
All four of the arrested people remain in custody on suspicion of murder, he said.
Detectives investigating the incident have been granted extra time to question the 20-year-old woman.
A post-mortem examination revealed the cause of Mr Brocklesby’s death was stab wounds.
Detective Chief Inspector Simon Bottomley, leading the investigation, said: “Officers have established that the incident which led to this man losing his life stemmed from an altercation at a house party at a nearby property on Brooklyn Road.”
Police said it was thought there had been an altercation at the party and the victim, who was at an address on the same street, had been asked to help.
He was approached by a group of men and women and was stabbed in “a further altercation”.
DCI Bottomley said: “This was a vicious attack which resulted in a man losing his life.
“At this stage of the investigation we believe that following some disorder at a house party, the victim had been on his way to help.
“As a result, he was set upon by what we believe to be a group of five men and women and subsequently received stab wounds to his back.
“There were a lot of people in the street at the time of this attack and I urge them or anyone else who can assist us with this inquiry to contact police.”
Anyone with information should call 0845 6060606.
Meanwhile, West Yorkshire Police arrested a 32-year-old on suspicion of murdering a 75-year-old who died after being assaulted on Friday night.
Officers were called to Alder Street, Fartown, at around 8.30pm and found the pensioner in a serious condition outside the property.
He was taken to Huddersfield Royal where he was pronounced dead a short time later.
The suspect remains in police custody and a post-mortem examination will be held.