Police were called to Hexthorpe following reports that a man had been stabbed.
Residents say the incident happened around 4pm yesterday (Saturday June 18) in Urban Road and a man was found with stab wounds on Eden Grove.
Eye witnesses reported seeing armed police officers on the scene and paramedics.
One resident, who did not want to be named said: "I was putting my three-year-old daughter in car and there were police all over, blood all over a car and armed police flying down the road. My daughter had her hands over her eyes.
"This use to be a nice area back and you'd never stuff like this, it's getting worse and worse in Hexthorpe."
The witness said police arrived on Urban Road but then sped off to Eden Grove where a male was found with stab wounds.
The extent of his injuries are unknown at this time.
More to follow