Police have shot and injured a man on a street in south-west Birmingham.
An armed officer fired his weapon in Hereford Close, Rubery, at about 21:00 BST on Wednesday.
West Midlands Police said it "resulted in one man being taken to hospital with a gunshot injury".
Armed officers were called to the road following reports of a firearms incident, said police watchdog IPCC which is also conducting its own investigation.
Another man was arrested for suspected firearms offences.
Eyewitness Simon Hodges said: "I was sat in the back garden and I heard a bang, so I come out the front and I see armed police running up and down the road with a police dog.
"I was told to get back in my house and that's where I went. It was very scary. It's not every day you see police running round with guns."
West Midlands Ambulance said the injured man, aged in his early 40s, was taken to hospital with a wound to the chest.
The armed officer's body-worn video camera was switched on at the time, with the footage gathered by the Independent Police Complaints Commission (IPCC).
Part of Hereford Close has been cordoned off while investigations take place.
"A police firearm has been secured. There is early evidence to indicate a single shot was fired by one police officer," the IPCC said.
IPCC Commissioner Derrick Campbell said: "We will be carrying out a thorough, independent investigation into this serious incident, as is appropriate when police use potentially lethal force.
"We are making contact with the man's family and will ensure they are updated on the progress of our investigation."