Drug dogs helped root out marijuana at a Wood County high school.
Canine units from four area police agencies searched lockers, offices and the parking lot at Williamstown High School Wednesday morning.
Police say the dogs made three possible hits, but no drugs were located.
"Our operation does not include the search of any of the students," said Williamstown Police Chief John Burdette. "So, because of the fact that the search did not result in any findings, is not indicative of the true facts here."
Authorities were tipped off earlier this month that the school may have a drug problem, when about 50 teens were cited at Tomlinson Park for tobacco violations.