A 70-year-old man was knocked to the ground by two thugs who stole his wallet.
The victim was assaulted from behind in Broom Leys Road, Coalville, at 11.30pm on Friday.
He was able to walk home but was later taken to hospital, where he was treated for cuts and bruises.
Detective Constable Julia Newton said: "This was a nasty incident involving an elderly man who had been out enjoying a night at the pub.
"I am hoping there may be someone who saw something which can help bring those responsible before the courts."