SAN DIMAS — Sheriff’s deputies arrested a man and two women on suspicion of auto theft Wednesday after a woman spotted her own car, which had been stolen earlier in the day, driving on the 10 Freeway, authorities said.

A woman had her Mazda Miata stolen Wednesday morning in Montclair, Los Angeles County sheriff’s Sgt. Kirk Smith said.

As she was on her way to school on the 10 Freeway in another vehicle about 9:45 a.m., “She spotted her car driving down the freeway,” Smith said.

The woman called deputies as she followed the car until it headed south on the 57 Freeway, exited at Arrow Highway and pulled into a gas station, Smith said.

The car and three suspects were still at the gas station when deputies arrived, he added. The suspects were arrested without a struggle.

The names of the suspects, who were turned over to Montclair police for booking, were not immediately available.