A teenager is fighting for his life in hospital after being stabbed in the arm.
Police were sent to Abingdon Avenue in Unsworth at around 5.05pm on Thursday after reports of a "disturbance".
It was discovered that an 18-year-old man had been stabbed in the arm and he was taken to hospital with injuries described as "life-threatening".
A man in his 40s has been arrested on suspicion of attempted murder and he remains in police custody.
An air ambulance landed 
A Greater Manchester Police spokesperson added: "Enquiries are ongoing at this stage and a scene remains in place while in officers continue their investigations."
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Melissa Tapping, 25, said there have been police on Abingdon Avenue, Sawley Avenue and Rufford Drive following the incident.
She said: "My nan lives a couple of streets away and about 5.45pm and we go down Abingdon Avenue on our way home and we saw loads of police cars.
"We went to have a look what was going on and there was a large area cordoned off.
"There was a cul-de-sac with houses cordoned off and there was a door open.
"There was an air ambulance that landed on the grounds of St Bernadettes Roman Catholic Primary School which has now left.
"There has been a couple of incidents that have happened in the area recently.
"It just seems to be getting worse."
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