A California shopping mall will require unaccompanied minors to wear lanyards with their identification after a brawl over the weekend forced the mall to shut down.

Several fights broke out just after 6 p.m. at Moreno Valley Mall east of Los Angeles on Sunday, resulting in authorities being called to help security break up the physical altercations. No weapons were used in the scuffles, according to mall management.

The mall’s movie theater was offering $4 tickets to celebrate National Cinema Day and hundreds of people had come to the shopping center to take advantage of the offer.