Harford County public school officials said no drugs or tobacco products were found during a routine, random drug dog scan conducted in the Havre de Grace High School parking lot on Thursday, Feb. 23.

The scan, done as part of the school system's commitment to keeping illicit drugs out of the schools, was accomplished using a drug-sniffing dog under the direction of the Harford County Sheriff's Office, according to a school system news release.

The scan involved 20 cars being checked by a single dog. The 15‐minute scan, from 9:05 to 9:20 a.m., was supervised by two Havre de Grace police officers, one school administrator and the school system's coordinator of safety and security.

"The scan did not result in any alerts for controlled dangerous substances or tobacco violations," the news release said.