Authorities plan to expand their search Monday beyond the South Shore barrier island where police have found several human remains since December.

Starting about 9 a.m., New York State Police will search both sides of the Wantagh State Parkway from Merrick Road to Ocean Parkway, the agency said Friday.

The portion of the parkway between Merrick Road and the Jones Beach water tower -- including the bike and pedestrian path -- will be closed "for an indeterminate amount of time," police said.