RIVERSIDE, California (AP) — A former Guatemalan soldier suspected of helping to carry out a massacre during the country's civil war is facing trial in the United States on charges of lying on his application to become an American citizen.

Federal prosecutors hope to strip 55-year-old Jorge Sosa of his U.S. citizenship, arguing he failed to disclose his participation in the killings in the Guatemalan village of Dos Erres in 1982. Opening statements could begin late Tuesday in Riverside, California.

Sosa is one of four former Guatemalan soldiers arrested by the U.S. in connection with the massacre: one was deported, one is serving time for lying on his naturalization form and another is being held as a material witness in Sosa's case.

Sosa has said he was not in the village during the killings.