Authorities have released the name of the woman who was killed Sunday evening at the Tri County Fair in Deer Lodge.
Powell County Sheriff Gavin Roselles says Darylynne Day, 36, of Anaconda died after being hit by a vehicle taking part in the demolition derby .
Day was one of seven people hit by a car that was taking part in the event at about 9:30 p.m. on Sunday.
Day was an emergency medical technician who was on duty with Powell County EMS at the time of the incident.
Roselles said the incident remains under investigation Tuesday.