SANFORD — A 21-year-old man has been arrested in connection with the beating of a woman, who remained in critical condition Tuesday at Maine Medical Center, authorities said.

John P. L’Heureux was arrested on an aggravated assault charge and is being held in the York County Jail on $100,000 property bail or $50,000 cash bail. He is scheduled to appear in Springvale District Court on Thursday.

Tammy Andrews, 24, L’Heureux’s alleged victim, was found badly beaten, with broken bones, early Sunday near the town dump in Sanford by a passer-by.

Police had hoped to interview her at the hospital Monday, but couldn’t because she remained heavily sedated.

A break in the case came when a citizen came forward with information that helped implicate L’Heureux, according to Capt. Gordon Paul. He declined to elaborate, except to say the person was neither a witness nor in possession of information that led to a confession.

“Just a citizen who led police down the right path,” Paul said. “More in the nature of an informant. This was in part what led us, it wasn’t the total thing.”