Cpl. Tyler Wallingford. Credit: Courtesy of Standish Fire-EMS via CBS 13

A memorial service will be held in Maine for a 21-year-old Marine corporal slain in South Carolina.

The service for Cpl. Tyler Wallingford of Standish is set for Saturday at a funeral home in Portland.

[Maine Marine allegedly killed by another Marine in South Carolina]

Visiting hours are scheduled from 9 a.m. to noon with the memorial service to follow at A.T. Hutchins Funeral Home.

The Naval Criminal Investigative Service is investigating the April 12 fatal shooting of Wallingford at the Marine Corps Air Station Beaufort in South Carolina. A spokesman said they had detained a fellow corporal as a suspect in the shooting.

[Community in mourning after Maine Marine allegedly killed by fellow service member]

Both Marines were aircraft ordnance technicians with the Marine Fighter Attack Training Squadron 501, based in Beaufort.

Wallingford came from a family of firefighters, and worked with the Standish Fire Department while in high school.