DAVID W. DOONAN/Roane Newspapers
Harriman Assistant Police Chief Kenny Humphrey, left, is acting chief in the wake of Derek Pacifico resigning as the city’s top cop, effective Sunday.

After only a little more than a year on the job, Harriman Police Chief Derek Pacifico suddenly resigned this weekend.

“It has always been my goal to raise the Harriman Police Department to industry standards in professionalism and police work,” he wrote in a letter posted online Saturday.

“Although there is still much to do, it has come time for a change in leadership. As such, as of midnight Sunday the 22nd, I have resigned my position as Chief of Police.”