NIANTIC, Conn. (AP) -- State police are searching for an inmate who has escaped from York Correctional Institute in Niantic.

Police say the 49-year-old Lori Beyus was last seen wearing blue jeans and a maroon shirt on prison grounds in Niantic at about 6:30 a.m. on Sunday.

Department of Corrections records say Beyus is serving a 51-month sentence for second-degree robbery. She was sentenced in Jan. 2013.

No details were immediately available on how she escaped.