OLD ORCHARD BEACH – The massive biker presence police expected at a memorial service for an Outlaws motorcycle gang leader fizzled in this community, but hundreds of riders gathered earlier Saturday at the group’s clubhouse in Dayton.

About 50 family members and close friends visited the Cathedral Pines Funeral Chapel to pay their respects to Thomas Mayne, the regional treasurer of the club who was killed here on June 15 during a raid by federal agents.

A handful of bikers attended the service that was heavily patrolled by local police.

Old Orchard Beach Police Chief Dana M. Kelley said he talked with representatives of the organization in anticipation of a surge of club members in the area. He said he added five police officers to patrol the area for a total of 18 officers Saturday.

Kelley said the Outlaws members have frequented the downtown bars this past week. He said they “have all been polite” and assured police that they “are not looking for trouble.”

“They just want to come and pay their respects to Mr. Mayne and be on their way,” Kelley said. “So far, that is what it has been.”

Earlier Saturday, about 250 bikers attended a heavily guarded memorial service at the clubhouse. Sheriff’s deputies were outside and would not permit media on the property.

An American flag flew at half-staff outside. After the tribute, about 100 participants went on a ride.

“It’s been a smooth operation,” York County Sheriff Maurice Ouellete said. “I anticipate it to remain that way.”

Mayne, 58, had been indicted on charges of racketeering and attempted murder in the shooting of a Hells Angels member last year. Federal Agents with the Bureau of Alcohol, Tobacco, Firearms and Explosives surrounded Mayne’s home on June 15 in Old Orchard Beach. Authorities said someone inside the home started shooting. Mayne was killed when agents returned fire.

Mayne was one of 27 members of the Outlaws who were named in a federal indictment. The charges range from attempted murder and racketeering to drug and firearms violations.

Mayne was the Outlaws’ regional treasurer and at one time served as the regional “enforcer,” the indictment said.

His obituary posted on the funeral home’s website said he spent most of his time riding his Harley-Davidson motorcycles with other Outlaw members and enjoyed playing his guitar, surfing, playing hockey, fishing and gardening with his wife.

A friend from Old Orchard Beach who attended the memorial service said he and Mayne lobstered in Saco and dove for sea urchins together. He said Mayne was a good friend to a lot of people.

He was born in Massachusetts, graduated from high school in 1971 and served in Vietnam with the Air Force until 1973, according to the obituary. He was a self-employed lobsterman until he became disabled 10 years ago.

He was married for 28 years. Alison Mayne, one of his two daughters, declined to comment on her father’s life. Many other friends or family who attended the service declined to comment.

A family member or friend who attended the service drove a red truck in front of the funeral chapel to block the entrance from television cameras.

Kelley said about 30 members of the Diablos Motorcycle Club were seen around 4 p.m. in Wells. A few Hells Angels members also were spotted this past week, he said.