Authorities say someone set off two soda bottle chemical devices at a movie theater complex in northern Virginia, scaring patrons who fled after hearing what sounded like firecrackers or gunshots.

Fairfax County Police spokeswoman Lucy Caldwell says no one was hurt though the theater and food court were evacuated of about 2,000 people early Sunday while authorities investigated.

Fairfax County Police say moviegoers called 911 and reported suspicious "popping noises" around 12:15 a.m. Sunday at the AMC Tysons Corner 16 theaters.

Caldwell says the investigation continues and anyone with information can contact police in Fairfax County, a Virginia suburb of the nation's capital.