The four officers had been carrying out searches at the station and detained a man on suspicion of a kidnap. However, at the station, one officer was kicked in the face and another bitten on the arm. The man later kicked a third officer several times and struck a fourth in the face at a nearby police station, Birmingham Live reports.
It is believed one officer suffered a broken nose and cheekbone in the assaults in King Norton, Birmingham.
Two of the four attacked were left needing hospital treatment, West Midlands Police said.
One still remained in hospital as of around 7am today – three hours after the beating.
The force said: “For several Bournville officers, it did not end peacefully. Following a call to the Northfield WMP area to the reports of shouting heard from a neighbours address officers conducted enquiries.
“Whilst conducting checks for parties involved in the area they attended Kings Norton Train Station and located a male potentially involved. He was subsequently arrested on suspicion of kidnap.
“Following his arrest he has kicked one officer in the face and bitten the arm of another, requiring hospital treatment. When at custody he has kicked another officer several times and managed to hit another in the face causing a suspected broken nose and cheekbone.”
“Two officers requiring hospital treatment beyond the end of their shifts this morning and injuries that will affect them and their lives for some time to come.
“We will wait and see what can be done by @DetectivesWMP over the coming day. Thank you to the wonderful staff at @uhbtrust for their treatment of our officers.”
Another officer with West Midlands Police was spat at in the eye this week while attending a domestic violence incident.
He also needed hospital treatment after the assault in Newtown, Birmingham.
“On Sunday whilst attending the report of a domestic, an E Unit Newtown officer was spat at by a male he was arresting resulting in spit landing in and around his eye,” the force wrtote on social media.