FDA guards shoot 15-year-old boy outside lab in Wash.

Security guards outside a Food and Drug Administration lab in suburban Bothell shot and wounded a teen Friday after the boy struck one guard with a car, Snohomish County authorities said.

The 15-year-old boy was treated at a hospital for a gunshot wound to the foot, county sheriff's spokeswoman Shari Ireton said. The teen was also involved in a non-injury hit-and-run accident after he fled from the lab's parking lot, she said.

The boy was booked into juvenile detention in Everett for investigation of second-degree assault.

The guard suffered minor injuries, KOMO-TV reported.

The two guards told police they approached a suspicious person in the lab parking lot at about 7 a.m. Friday. They say that person fled, then returned, got into a vehicle and backed out, striking one guard.

The teen attends an alternative high school near the FDA building.

The two guards were under contract to the Federal Protective Service, a division of the Department of Homeland Security that provides security at federal buildings.

"The FPS is working with local law enforcement to investigate this incident," the agency said in a statement attributed to spokeswoman Jacqueline Yost.

The FDA laboratory, called the Pacific Regional Lab Northwest, analyzes samples of products for safety and compliance with regulations. It is located in a suburban business park.

The teen is a student at the Secondary Academy for Success, an alternative high school near the FDA building, said Northshore School District spokeswoman Leanna Albrecht.

There's no history of problems between students at the school and the FDA, Albrecht said.