An Ontario man was arrested on Sunday after trying to enter Saskatchewan via the United States with a pipe bomb hidden amongst his belongings, Estevan RCMP say.

Canada Border Services Agency officers at the North Portal border crossing notified the police at 3:30 p.m. CST after the suspected explosive device was found in the Toronto man's vehicle.

Sgt. Darryl Milo said the 21-year-old was carrying a bomb, but he doesn't believe the suspect intended to use it or to harm anyone with it as he was crossing the border or in the future.

"I guess if I can give him any credit he didn't just throw it in the garbage or into a ditch or some place where it could have been found," said Milo.

The device was 18 inches long, made from a copper or brass pipe with the end secured and fused on it, described Milo.

"There was really no quick safe fix to dispose of this," said Milo. "And so here he was basically stuck with it and maybe made a poor choice, or obviously made a poor choice in taking it with him and crossing the border."

Derek Joseph Formosa was charged with possession of an explosive device as the Explosive Disposal Unit detonated the pipe bomb at 8:30 p.m. CST.

He is scheduled to make his first court appearance Tuesday morning.