Police in Suffolk are linking three robberies in which victims were injured and have released a CCTV image of a man they would like to speak to.
On Wednesday night a 36-year-old woman was hurt when her bag and phone were taken in Suffolk Square, Sudbury.
An hour later, a man, 35, was found collapsed with facial, arm and leg injuries in Newton Road and his phone, wallet and watch had been taken.
In the early hours of Friday, a man, 39, was attacked and his phone stolen.
The latest incident happened in Cornard Road, near the mini roundabout at Cats Lane, at about 0030 GMT.
The victim of that attack suffered facial injuries. , described the offender as 6ft (1.83m) and wearing a white or cream Puffa-style jacket and a black woolly hat.
Police said the attacker in the first incident, at 2230 GMT on Wednesday, was drunk and asked his victim for directions. After the robbery he ran off towards North Street.
He has been described as of Turkish appearance, about 40, 6ft (1.83m), with black hair. He was wearing a black bomber jacket, a black woolly hat and blue jeans.
After the second victim was found collapsed at Newton Road at 2320 GMT, another man was seen to run from the road towards King Street.
He is described as 6ft (1.83m), of slim to medium build and was wearing a Puffa-style jacket.
Det Insp David Giles said: "Three people who had been enjoying a festive night out in Sudbury this week have had their Christmas ruined.
"I want to speak to anyone who was in Sudbury on Wednesday and Thursday evening this week, who may have seen any of the victims or the offender.
"I particularly want to speak to the man shown on CCTV as he may hold important information about these robberies."