On Wednesday evening, the 14-year-old was discovered with a single stab wound on Gladdis Road, Bournemouth, and was brought to hospital.
The boy’s injuries are no longer considered life threatening. Dorset Police said three more young boys, one 14 and two 15, had been arrested on suspicion of attempted murder.
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More from Dorset Police
View all Dorset Police coverage
- Doctor Behind Bars for Sickening Patient Abuse and Secret Filming
- Knife Carrier Locked Up as Police Crack Down on Street Weapons
- Teenager Arrested After E-Bike Crash Leaves Newborn in Hospital
- New Recruits Ready to Tackle the Beat
- Bournemouth Woman Jailed for Life Over Deadly Car Attacks
- Murder Arrest After Wiltshire Man Vanishes in Somerset