DARTMOUTH — A Dartmouth woman is under arrest after an investigation into narcotics activity.

Dartmouth Police Department Narcotics Detectives arrested Kelly Oliveira, 30, of 33 McCabe Street on Thursday at about 3:03 p.m.

Oliveira is charged with possession of a Class B drug, possession of a Class C drug, and conspiracy to violate drug laws.

It was during the attempted arrest of Oliveira that police encountered Erick Roman, 29, of New Bedford, who is accused of trying to hit detectives with his vehicle.