Detectives were trying to determine who stole a 310-pound safe from an office in the Grinton I. Will Library branch over the weekend without triggering the alarm system.
Employee payroll checks and about $1,800 in petty cash were in the safe, police said.
"We are working very diligently with the Police Department to solve this," Scharien said, expressing concern that the alarm did not go off. "Clearly, we are concerned that it is an inside job."