Four more teenagers were arrested after a hate incident in Bury.
A 15-year-old boy was subjected to homosexual abuse during a walk along Manchester Road.
A brief confrontation took place at Manchester Road Park before the boy was attacked by several people shortly after 3.30pm on Monday.
He was hospitalized to treat head injuries and is now recovering at home.
On Tuesday, a 15-year-old boy was arrested on suspicion of an attack.
Later, four other teenagers aged 14 and one at the age of 15 were arrested for alleged assault.
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The adolescents were all interviewed and released for further investigation.
Officers turn to anyone who has information to make contact.
Chief Inspector Phil Spurgeon of the GMP district of Bury said, "An innocent teenager was subjected to an offensive attack as he walked down the street. We do everything we can to ensure that those responsible are brought to justice.
"Fortunately, the boy is now recovering at home with his family, but hate crimes have no place on our streets and we treat this very seriously.
"While we have arrested five boys as part of our investigation, I would urge any witness or anyone with information to contact them as soon as possible."
All individuals with information are requested to call the police on 0183 856 8172, indicating Incident No. 1783 of 11 February. Reports can also be created anonymously via Crimestoppers on 0800 555 111.