WASHINGTON — The United States Marine Corps has identified the four Marines shown in a video urinating on what appear to be dead Taliban fighters, without releasing any names, and has named a lead investigating officer to decide whether they should be charged, Marine officials said Friday.

Marine officials were also attempting to identify the person who shot the video, which emerged early Thursday and has incited a wave of anti-American sentiment at a delicate moment in the decade-long war in Afghanistan.

Two of the four Marines were questioned Thursday by criminal investigators and released to their commanders, the officials said. All served in the Third Battalion, Second Marines, and were based at Camp Lejuene in North Carolina.

The lead investigating officer is Lt. Gen. Thomas D. Waldhauser, the commander of the Marine Corps’s Central Command, which oversees all Marine operations in Iraq and Afghanistan. General Waldhauser is to be responsible for two concurrent investigations: a criminal inquiry into the actions of the four Marines and possibly others, and a military investigation into broader leadership issues with the command and the factors that led to the episode.