A woman has been stabbed in a “vicious and unprovoked attack” while walking with her five-year-old son.
Greater Manchester Police said the 24-year-old was approached by a man with a knife in Rudheath Avenue, Withington at about 13:30 BST on Saturday.
She suffered wounds to her leg in the attack and was taken to hospital where she is in a stable condition.
A 17-year-old boy has been arrested on suspicion of attempted murder and is being questioned by detectives.
The woman’s child was assessed at the scene by the emergency services and had no visible injuries.
Police earlier issued images of a man they wanted to question about the attack, who was last seen making off on foot on to Bromborough Avenue and then continuing in the direction of Whitchurch Road.
Det Insp John Robb said: “This was a vicious attack in which a woman was stabbed in front of her young son.
“Our thoughts are with her and her family as she recovers from this shocking ordeal.
“I would like to reassure the public that this is believed to be an isolated incident and we are not currently looking for anyone else in relation to this attempted murder.”