PORTLAND – Prosecutors want more information before deciding whether to bring charges against a driver whose illegal U-turn caused a pileup on Interstate 295.

The seven-vehicle pileup on Dec. 7 north of the Bucknam Road exit in Falmouth sent five people to the hospital and delayed traffic for hours.

Investigators said it happened after a Cadillac driven by Victoria Miele, 63, of Falmouth, made an illegal U-turn. She drove away as the cars crashed in a chain reaction.

The Cumberland County district attorney’s office won’t elaborate on what information is being sought about the incident. State police already spent seven weeks investigating the crash before turning over its initial findings.

“We will obviously attempt to comply and get whatever the DA needs,” said Stephen McCausland, spokesman for the Maine Department of Public Safety.

Ron Schneider, Miele’s lawyer, said he could not shed any light on the latest development.

“All I’m doing is waiting for the investigation to be completed and for a decision from the district attorney’s office,” he said.

Miele is accused of braking abruptly and changing directions using a crossover that was marked “No U-turn” and “Authorized Vehicles Only.” It is unclear what charges, if any, might be brought.