Flowers have been laid outside the house of Vincent Kershaw, 85, who was found battered to death in Rochdale.
Greater Manchester Police say they're treating the motive as robbery.
Detectives say Mr Kershaw was carrying a large amount of cash with him, possibly as much as £3000, shortly before he died.
No arrests have been made and police are continuing to investigate.
Click here for more on this story.
More top news
It's the last day of the meteorological Summer but can we hold on to the warmth and sunshine for a little longer?
Joe Hart has completed his surprise move from Manchester City to Torino on a season-long loan.
The mother of backpacker Mia Ayliffe-Chung pays tribute to Tom Jackson and his family. She says he was an incredible young man.