San Diego ? Assault charges were filed Thursday against six Marines stemming from an incident in April in the Iraqi village of Hamdania, military officials said.

The alleged assault was uncovered during an investigation that previously led to allegations that seven Marines and a Navy corpsman murdered an Iraqi civilian on April 26.

Three of those Marines – Sgt. Lawrence G. Hutchins III, Cpl. Trent D. Thomas and Lance Cpl. Jerry E. Shumate Jr. – now face an additional charge in the April 10 assault.

The other Marines charged with assault were Lance Cpl. Saul H. Lopezromo, Pfc. Derek I. Lewis, and Lance Cpl. Henry D. Lever. The nature of the assault was not described.