A 17-year-old boy from Botley has been arrested on suspicion of affray and causing a disturbance on educational premises.
It relates to a lockdown at Barton Peveril College in Eastleigh following reports of a knife inside.
READ MORE: Three boys assaulted after gang enter college grounds
Armed police were deployed to the scene at around 2.20pm last Thursday but no weapon was found.
Three boys suffered minor injuries after being assaulted by a group of five to six boys who had entered the grounds.
The 17-year-old boy remains in custody at this time.
Anyone with information is asked to call 101, or submit information via the Hampshire Constabulary website, with reference 44230095510.