An 83-year-old man has died after being "viciously" attacked by intruders in his home.
Ferozur Rahman was found by his grandson
Ferozur Rahman, who lived alone in Bethnal Green, east London, was found unconscious with severe head injuries by his grandson on Friday.
The father-of-seven, who was last seen alive on Thursday night, was taken to hospital but died on Saturday.
Police said the door to the flat had been forced and one or more suspects had attacked Mr Rahman.
A Metropolitan Police spokesman described the attack on Mr Rahman as "vicious".
Det Insp Lawrence Smith told the BBC: "Mr Rahman lived alone in his flat on the Colombia Estate and someone has broken into his house and assaulted him with such severity that he subsequently died of his injuries.
"We are appealing to the local community to help solve this wicked and ghastly crime."
Mr Rahman was last seen at his ground-floor flat in Gunthorpe Street at 2130 GMT on Thursday.
His 17-year-old grandson found him with severe injuries, inside the property, at 1410 GMT on Friday.
Mr Rahman is understood to be the father of four daughters, three sons and to have several grandchildren.
His son-in-law Abjal Hussain, 43, said: "He was a good man who was likely to help everyone, he was like a community worker - everybody goes to him for any type of help."
Anyone who saw anything suspicious on the estate on Thursday or Friday, or who saw anyone entering or leaving Mr Rahman's home has been asked to contact police.