A large area around the scene was cordoned off in the wake of the incident, with Brassington Avenue closed in both directions near Lower Parade.
A 40-year-old heavily pregnant woman, attacked and stabbed at a busy town centre in the United Kingdom, has given birth to a healthy baby even as she fights for her life.
A man, 41, who is believed to be known to the woman, was arrested on Friday evening on the suspicion of attempted murder, Mirror.uk reported.
The 40-year-old pregnant woman had been taken away from the scene by air ambulance at 4pm.
“Fortunately they suffered only minor injuries”, she said.
A West Midlands Ambulance Service spokesman said: “We were called at 3.17pm to Trinity Hill in Sutton Coldfield, near to the Baptist church”.
Local neighbourhood officers were flagged down by passers-by on Trinity Hill and a 41-year-old man was immediately detained by police in connection with the assault.
In a statement on Saturday afternoon the force said officers would be able to continue questioning the man arrested until the early hours of Sunday morning.
Mr Harper said of the victim and the suspect: “They are believed known to each other so this was what we call a domestic-related situation”.
The woman was attacked with a knife on Friday.
“I would certainly like to thank the individuals who got involved into a volatile situation with a complete disregard for their own safety”, Harper added.
He added the investigation could become a murder probe if the mother does not pull through, but said: ” Obviously our wishes are with her and we hope that she will recover”.
Mr Harper praised those who came to the woman’s aid.
They have since received treatment for their wounds.
Two people who tried to step in have injuries to their hands and are being treated for their injuries.