Fountain Green Elementary School was put on lockdown as a precaution for a short time around 12:30 p.m. today while Harford County Sheriff’s Deputies investigated a suspicious incident nearby. According to Harford County Sheriff’s Office spokeswoman Monica Worrell, sheriff’s deputies suggested the school take precautions as deputies chased three 18-year-olds who ran in the direction of the school. The teens ran from deputies who were investigating a suspicious incident in the 400 block of Weatherby Road. The teens were apprehended and released. Another 18-year-old who was inside a nearby residence could face charges of possession of a controlled dangerous substance, Worrell said. The incident lasted about 15 minutes. No one was allowed to enter or exit the school during the lockdown.