Two men arrested in connection with the murder and robbery of a man at an east London train station are still being held in police custody.
Mr Coffey was known as "eight days a week" because he worked hard
The victim was identified as John Coffey, a builder originally from Killarney, County Kerry, but thought to have been living in Hackney.
The 52-year-old was found just after midnight on Monday at Wood Street station with a stab wound.
The men are also being questioned over two robberies in Walthamstow on Sunday.
On Wednesday, police said five new witnesses have come forward regarding the murder.
Last train home
Scotland Yard said Mr Coffey, also known as "eight days a week" because he was a hard worker, had spent the day at a friend's house in Walthamstow.
At about 1830 BST they went to The Plough pub and then on to The Precinct Chinese restaurant, in Wood Street, for a meal at 2000 BST.
Mr Coffey left his friend at about 2200 BST to catch the last train home from Wood Street station.
His body was found just after midnight on Monday by two 16-year-old girls.
It is thought he was attacked on the platform and then staggered to a flight of stairs before collapsing. His black wallet was missing.
Scotland Yard said a man and woman were robbed within 15 minutes of each other outside Walthamstow station which is the next stop.
Police said two men, aged 33 and 28, were arrested on Tuesday and are being questioned over Mr Coffey's death and the two robberies.
Wood Street station still remains closed.