Police have appealed for information after a heavily pregnant woman was slashed across the face in a "completely random attack".
Hayley Baker, 29, was taken to hospital with serious facial injuries after the incident on Thursday.
Detective Inspector Jamie Stenton said: "This was a nasty attack which appears to have been completely random.
"I would urge anyone who has any information or knows who is responsible to call the police as soon as possible.
"Anyone with any information should call DI Stenton on 101 or Crimestoppers, anonymously, on 0800 555111."
Read: Victim of attack was worried for unborn baby
A pregnant woman slashed across the face in an apparent random attack has said she was concerned for her 29-week-old unborn baby.
Hayley Baker, 29, said after seeing the volume of blood, her most immediate concern was the effect on her unborn child.
The veterinary surgeon told the BBC that she heard "fast footsteps behind her" before feeling a "heavy blow on her right temple".
"I moved to the side of the pavement so they could pass and the next thing I felt was a punch in my right temple, turned around and the person was already running in the opposite direction," she said.
"At that point I put my hand up to my face and could feel all the blood running down."
Read: Pregnant woman has face slashed in 'random attack'
A heavily pregnant woman has been slashed across the face in a random attack in Cambridge city centre.
Hayley Baker, who is almost seven months pregnant, was attacked by a man in Hertford Street shortly after 8.30pm on Thursday.
The veterinary surgeon was taken to hospital with serious facial injuries after the incident.