KENNEWICK, Wash. (AP) — Two teenagers have been sentenced to a combined 20 years in prison for abducting one of their great-grandmothers and driving with her in the trunk of her car for about 200 miles before she escaped.

The Tri-City Herald reports a 17-year-old boy was sentenced Thursday to 9-1/2 years for his role in kidnapping his great-grandmother.

In court, the teen apologized, saying it was the worst decision he has ever made.

A 16-year-old boy who admitted to executing most of the plot to gag, bind and kidnap the woman, was sentenced to just over 10 years. He also apologized during sentencing.

A statement by his 87-year-old grandmother was read telling the teens she's sorry for what they've been through in the recent months and that they should behave in prison.

A third co-defendant was ordered to serve up to 2-1/2 years in a state juvenile institution. She is appealing.

Both boys pleaded guilty to kidnapping, burglary and theft of a motor vehicle charges.