A 28-year-old Woodbridge man has been charged with sexually assaulting a seven-year-old girl, Prince William County police said.

Martin De Jesus Valle-Alas, of the 3900 block of Forestdale Ave., is an acquaintance of the girl, authorities said. Police said they were called to investigate the assault on May 21.

Valle-Alas is being held without bond. He was charged with aggravated sexual battery, object sexual penetration and indecent liberties with a minor in a supervisory role.