A police officer has been seriously injured in a late-night shooting.
The officer was shot twice in the shoulder by a man he was following for acting suspiciously in Wolverhampton.
The 33-year-old constable, who has not been named, was taken to hospital, where his condition is described as serious but stable.
Police are carrying out house-to-house enquiries in Oaklands Road and Penn Road, near the city centre. The area is sealed off.
A West Midlands Police spokesman said the incident happened about 2230 GMT when the Pc followed a man who had aroused suspicion at the Bromford Rise flats.
The officer followed him to Penn Road when the man produced a weapon, shooting and seriously injuring him.
Assistant Chief Constable Anil Patani said: "This incident demonstrates our officers' commitment to keeping the community safe.
"West Midlands police officers routinely challenge suspicious criminal behaviour and this demonstrates they are incredibly brave in doing so.
"Criminals resort to extreme measures and we will do all we can to protect the community."
A 25-year-old man has been arrested in connection with the shooting of a police officer in Wolverhampton.
The constable was on plain clothes duty when he was shot twice in the shoulder at close range on Saturday night in Penn Road, in the Graiseley area.
The shooting happened after he and a colleague chased a man seen acting suspiciously in nearby Oaklands Road.
The experienced 33-year-old officer is in a serious but stable condition in hospital, with family at his bedside.
The officer, who has not been named, has seven years' service with the police.
He has undergone surgery on his left shoulder, but is said to be conscious.
House-to-house enquiries have been carried out in Oaklands Road and Penn Road, and a large area was sealed off.
A West Midlands police spokesman said the 25-year-old man had been arrested on Sunday afternoon and was being questioned.
Earlier, Assistant Chief Constable Anil Patani said the shooting, which happened at 2230 GMT, was being treated as attempted murder.
He told a press conference: "This demonstrates how incredibly brave our officers are.
"Sometimes we take for granted the extent we ask of police officers to keep the public safe."