A Northamptonshire man has died in hospital a month after he was assaulted by three men posing as Border agency officials.
The 63-year-old was assaulted at his home in Wellingborough on Friday, November 25, after opening his front door to the three men.
But he died in hospital on Monday, December 12, leading Northamptonshire Police to open a murder inquiry.
Police said the attackers are known to have visited the property between 8.45pm and 10pm on November 25.
They added the men were clad in black and claimed to have come from the Border Agency.