Police say Warren Andrew Sill, 26, last spoke to his family on July 4. (RCMP)

The search for a young American filmmaker believed missing in the Great Bear Rainforest of northern B.C. has been suspended.

Twenty-six-year-old Warren Sill of Ohio travelled to the New Hazelton area earlier this month to film a documentary on the kermode bears — a rare subspecies of black bears that have white coats and are known as "spirit bears."

Police said Sill's vehicle had been left parked on the edge of the Seven Sisters Provincial Park at the entrance to the Whiskey Creek Trail since July 5.

The RCMP, along with Search and Rescue teams from around the province, began a massive air and ground search nearly two weeks ago but found no trace of Sill.

Sgt Jeff Pelley of the New Hazelton RCMP issued a release Sunday night to announce the search had been called off. He said "Further search efforts will be considered should further information be received that may assist in identifying other possible search areas."

When the search was launched police had said they were concerned that Sill wasn't an experienced outdoors man and his camping gear was still inside his car.

Sill is described as a white male, about five feet ten inches tall and weighing around 180 pounds. He has a medium build and short dirty blond hair.

Anyone with information is asked to contact the New Hazelton RCMP at 250-842-5244 or call 911.