DERBY, Conn. (AP) A group of Connecticut police officers are under investigation in connection to a civilian complaint about racial profiling.

The New Haven Register reports several Derby officers are a part of the probe that began with a complaint filed on July 5 by a woman about an alleged occurrence of racial profiling at the annual firework show in the area.

According to a WTNH broadcast, the woman is a teenager's mother, and says that officers racially profiled a group of people.

Police say the teen gave a detailed statement to police about what happened, and provided low-resolution cell videos. Chief Gerald Narowski says the agency will begin a formal investigation. There is no further information about how many officers were involved, or their identities.