ATLANTIC CITY, N.J. (CBS) — Police are investigating after a brawl reportedly involving about 40 students broke out at a South Jersey high school.

Officials say the fight started around 10:42 a.m. Thursday at Atlantic City High School on the 1400 block of North Albany Avenue.

Authorities say three students have been taken into custody, but there are no charges at this time.

A security guard was taken to the hospital, but police say any injuries are not believed to be serious.

The incident remains under investigation.

Stay with CBSPhilly.com for the latest on this developing story.