Police are trying to determine who authorized a violent teen party at a Stamford apartment complex over the weekend.

Police arrested seven teens and say they had to Taser one when they arrived at 300 Tresser Blvd. late Saturday night. Officers claim about 100 teens were scattered outside - some fighting and shooting guns. Police say they recovered a weapon under a car.

Authorities are investigating whether alcohol played a role in the incident. They are also probing who gave the OK for the party at the apartment complex?s community center.

Police hope a nearby surveillance camera will yield clues.

No one was injured in the brawl and the teens were eventually released.