SACO — Police are looking for people who saw a motor vehicle accident on Main Street this morning that killed a 74-year-old Clark Street woman as she was walking to church.

Constance Orendorf was struck by a minivan while crossing Main Street at Cleveland Street around 9:45 a.m., likely on her way to Trinity Episcopal Church, said Sgt. Jeffrey Holland.

She was transported to Maine Medical Center in Portland, where she died late this afternoon of severe head trauma and other injuries, Holland said.

The driver of the minivan, Walter Fleury, 66, of 1 Wild Dunes Way, Old Orchard Beach, was arrested and charged with operating under the influence of drugs, Holland said. Fleury was released on $400 bail.

Several people reported the accident, and Fleury remained at the scene, but he was visibly impaired and unable to provide information about the collision, Holland said.

A breath test showed Fleury hadn’t been drinking, but police are investigating whether medications, age or illness could have played a role in the collision, Holland said.

Police interviewed several witnesses who heard the accident or arrived shortly afterward, but they are looking for people who actually saw the collision, Holland said.

Anyone with information should call the Saco Police Department at 284-4535.