A young girl told police a man in a ski mask followed her outside of a Montgomery County elementary school, and officials have warned parents about the incident.
The alleged incident happened Thursday near Beall Elementary School in Rockville.
A girl told Montgomery County Police that she was playing with two other girls when a man wearing all black and a mask over his face approached her.
The girl said the man followed her until she rejoined her friends.
The school sent a letter home to parents alerting them to the alleged incident.
