Police are hunting three masked men who attacked four people in robberies in Frome.
Detectives have described the two incidents – which have seen people attacked in their own homes – as "extremely unusual" and are keen to speak to anyone who may have information.
The aggravated burglaries and robberies occurred at two flats in the town and officers said that in both cases the men forced their way in through the front door and assaulted their victims.
They then stole cash, a mobile phone and a computer console in the incidents, which police believe are linked.
The first incident happened on Friday evening at Cranmore Court.
Three men forced the front door of a second-floor flat and assaulted a 28-year-old man who was home on his own at the time.
Police said the victim was left shocked but not badly hurt.
The second robbery happened on Sunday evening in Christchurch Street East.
Again, three men forced the front door of the flat and assaulted the people inside, two men and a woman, who were in their early 20s.
One of the men needed hospital treatment for facial injuries.
The attackers were described as in their early 20s, and were wearing hooded tops with scarves or balaclavas covering their faces.
Detectives want to hear from anyone who witnessed the incidents, or may have seen the people responsible before or afterwards.
Detective Sergeant Jonathan Hooper, who is one of the officers in the investigation, said: "Incidents like these are extremely unusual in Frome, which is a pleasant and safe place to live and work.
"We are making detailed inquiries to establish why these incidents took place and to bring the people responsible to justice.
"As ever, we would like to hear from anyone who can help our investigation.
"Anyone who may have noticed anything suspicious, or think they saw the people we're looking for in the area at the time, then please contact us."
Anyone with information is asked to call Frome CID on 101 or Crimestoppers on 0800 555 111.
Another way to give information is visit www.avonand somerset.police.uk/contact/crime _reporting.