WASECA (AP) - A judge has approved prosecutors' request for a second psychological exam for a southern Minnesota teen accused of plotting an attack at his school.

The exam was ordered by the judge in determining whether to charge the 18-year-old from Waseca as an adult. He was 17 when he was arrested last year. Waseca police say they found him in a storage unit with bomb-making materials and a plan to kill his family and attack his high school.

Attempted murder charges against the teen were dropped. He still faces charges for possessing explosives.

The teen's attorney says the second exam is unnecessary, and that prosecutors only want it because the first wasn't in their favor.

A hearing to decide whether the teen will be tried as an adult is scheduled for June 30.