Vandals struck at Bel Air High School over the weekend, spraying graffiti on the school and athletic fields.
Between Saturday and Sunday, at least one person marked portions of the school building and athletic fields with "marking materials," according to a release from Bel Air Police.
The graffiti caused extensive damage and police are investigating.
Police have made no arrests, but are asking anyone with information to contact Bel Air Police Officer Richard Krause, 410-838-4500.
Those who wish to leave anonymous tips can contact Metro Crime Stoppers toll free at 1-866-7LOCKUP or text "MCS" then a message to CRIMES (274637). Tips to the hotline that lead to an arrest and indictment may be eligible for up to $2,000 cash reward.