BELLINGHAM, Wash. -- An unexpected twist in the case of a missing Ferndale teacher surfaced on Tuesday.

Jeremy Scully, who has not been seen since Thursday, was a member of an adult sex Web site, investigators said.

Skagit County Chief Deputy Will Reichardt said members of the legal site met others online in order to meet for sex.

Deputies said Scully's activities on the site may or may not be related to his disappearance.

Scully, 38, disappeared while driving from his Bellingham apartment to a friend's house in Alger.

Sully's girlfriend said investigators informed her on Monday night that the found body has been identified as Scully, and on Wednesday morning investigators said they'd confirmed the identification using fingerprints.

"(He was) the love of my life and I'm going to miss him very much," Robbin Goldsby said tearfully.

Skagit County Sheriff Will Reichardt said the body was found Sunday by hikers in a rugged area of Blanchard Mountain, some 200 yards off the main road through thick underbrush. The hikers reported the discovery to a Whatcom County sheriff's deputy who was in the area searching for Scully.

"The body was in a location where it could have gone a long time without being discovered. The hikers were in the right place - or the wrong place - at the right time," he said.

An autopsy Scully died of a gunshot wound to the head. Detectives believe robbery may have been the motive.

Scully's car was found abandoned Saturday afternoon on Interstate 5 near Lake Samish, about 8 miles from where the body was located the next day.

Bellingham Police Department spokesman Lt. Steve Felmley said there were no signs of foul play at the scene where the car was left with its door ajar and keys in the ignition.

Goldsby said she won't be able to rest until her questions are answered and due justice is served.

"I'm still trying to figure out how I'm going to get through just the next few days, not to mention the rest of my life," she said. "Just the simple question: why, why did this happen?"

Scully coached pole vault at Ferndale High School for eight years. He also worked as a substitute teacher at the school and helped coach pole vaulting at Western Washington University.

Goldsby said Scully often talked about his days with the students, and followed each one's progress closely.

"(Scully was) one of our Ferndale family members, part of our community, and that hurts, that hurts a lot," said Vic Randall, athletic director at Ferndale High School.

"I've coached track for 21 years and I've never worked with somebody so passionate," Ferndale High track coach Ted Genger said. "I've never worked with someone so responsible. He was always the first coach to get there and the last coach to leave, day in and day out."