MARYLAND

Explosive devices found: Students at Middletown High School in Frederick County were evacuated yesterday when an assistant principal, acting on a student tip, found two homemade explosive devices in a student's backpack, school officials said.

The students were evacuated to the high school's outdoor stadium at 11:45 a.m. and dismissed at 1 p.m. The bombs were taken to a nearby field and disabled by technicians from the state fire marshal's office.

A 14-year-old 10th-grader was detained by the Maryland Department of Juvenile Services, pending a decision by that department on how to handle the case, said W. Faron Taylor, deputy state fire marshal. The fire marshal's office found two other explosive devices in the boy's home and recovered all the parts, he said. Investigators have determined that the boy was acting alone, and they are searching for a motive, Taylor said.

THE REGION

Camp abuse case: A 12-year-old Prince George's County boy has pleaded guilty to physically abusing campers at an overnight camp in Gainesville last month. The Fort Washington boy pleaded guilty to one count of object sexual penetration, according to Assistant Commonwealth's Attorney Jeanice Wiethop.

The boy could face up to 30 days in a juvenile detention center when he is sentenced at his next court hearing, which will not be scheduled until a court-ordered evaluation is completed, Wiethop said.

The boy was one of four youths arrested and charged with physically and sexually abusing three campers at the Northern Virginia Baptist Center camp. This week, a 13-year-old boy from Prince George's pleaded guilty to two counts of object sexual penetration. He could face up to 60 days in a juvenile detention center.

The two other boys, a 15-year-old from Fairfax County and a 17-year-old from Prince George's, were counselors and are also charged with object sexual penetration. They face a Sept. 3 trial.

Compiled from reports by staff writers.