Wilton Police are investigating an altercation that took place Wednesday, Aug. 31, between two groups of students, one from Ridgefield and one from Wilton, at 8:30 p.m. on the Wilton High School field.

One Ridgefield student was injured, but it was unclear to police whether the student was struck with a fist or an object, said Lt. Stephen Brennan, spokesman for the department.

There have been no arrests and the investigation is ongoing.