Police arrested a Hamilton man and woman Tuesday evening after discovering ground up painkiller pills in their vehicle.

Around 7 p.m., police pulled over the couple's vehicle near Balmoral Ave. N. and Main St. E. because it had improper licence plates.

The man, who was driving, admitted to police that his licence had been suspended. He was arrested.

During the arrest, police noticed ground-up hydromorphone pills and syringes in plain view. The drug is a narcotic commonly used in hospitals as a painkiller.

The woman was arrested after admitting to the officers that she had an outstanding warrant with Brantford Police.

She was charged with obstruction. The driver was charged with driving while under suspension as well as possession of a controlled substance.

Both were released on a promise to appear in court.