Police arrested a 22-year-old Mililani woman on Saturday after she allegedly entered a vehicle to assault another woman who was accompanying the father of her child.

According to police, the suspect and the man had an affair that resulted in a child. The man was dropping off the child at the suspect’s house when the suspect confronted the other woman, who was seated in the man’s car. 

The suspect entered the vehicle and punched her. The man detained the suspect until police arrived. 

The suspect faces a charge of first-degree unauthorized entry into a motorized vehicle.