A 31-year-old man has been shot and injured by police amid reports he was "running around with an axe".
Witnesses at the scene, close to Hull city centre, said they heard loud gunshots and then saw a man on the floor, surrounded by police with "blood gushing out of him".
Andre Foster said he was in a nearby building and saw the man after he had been shot.
He said: "We heard two big, loud bangs, gun sounds, we looked out the window, we saw this fella on the floor, blood was gushing out of him.
"There were around six police around him, trying to stop him bleeding. I never saw an axe or anything, never saw a weapon. He was moving around, wriggling his body around like he was in agony."
A man near the scene, who did not want to be named, said he believed the injured man was his cousin who suffers from mental health issues and has drug problems.
He said: "All I've heard is one of my friends rang me and said: 'Your cousin's been running around with an axe and he's been Tasered and they've shot him.' That's all I know."
There was a large police presence in the sealed-off area, around Charles Street, on Tuesday morning.
Humberside Police said they were called to the Holderness Road area of the city "following reports of concerns for the safety of the public in relation to a man" near a post office.
A spokesman said: "The man, who cannot be named, is now receiving medical attention.
"An investigation is under way and the incident has been referred to the Independent Police Complaints Commission (IPCC), which is standard practice in such incidents.
"We are not looking for anyone else in connection with the incident at this time."