A man and a woman were beaten with a baseball bat during a robbery in Bedford on Monday night.
The armed robber, who was wearing a balaclava, broke into a house in Skerne Passage, Brickhill, at around 9.30pm.
He struck a 23-year-old woman on the head and she suffered significant blood loss. He then hit a 28-year-old man. Both victims have been taken to hospital.
The offender was described as a black man, around 6ft 2ins tall. He stole a distinctive pink Rolex watch worth £2,200 before fleeing.
Detective Constable Mike Armstrong said: “This was a vicious attack which left two people in need of hospital treatment to some very nasty injuries."
If you have information relating to this incident, contact DC Armstrong, in confidence, on 01234 275114.