A man was found stabbed in the leg on a street close to Nottingham city centre.
The 26-year-old was discovered at the junction of North Sherwood Street and Bluecoat Street at about 1300 BST.
Officers have cordoned off access to the roads from Fulforth Street, Shakespeare Street and Mansfield Road while they investigate further.
The victim was taken to hospital. His injuries are not believed to be life-threatening, said Nottinghamshire Police.
Anyone with information or who was in the area at the time the man was found is asked to get in contact.