At least 100 bikers have attended a heavily guarded memorial service in Maine for an Outlaws motorcycle club member who was killed in a shootout with federal agents.

The group left after the Saturday afternoon gathering at the Outlaws clubhouse in Dayton for Thomas Mayne. Sheriff's deputies were outside the clubhouse and would not permit media on the property. An American flag flew at half-staff outside the clubhouse.

After they left the memorial, participants went on a ride. They were then expected to attend a funeral in Mayne's hometown of Old Orchard Beach later Saturday.

Mayne was killed June 15 after agents with the Bureau of Alcohol, Tobacco, Firearms and Explosives tried to arrest him at his home.