WINDHAM — Windham police are asking for the public’s help as they continue their investigation into a car crash that claimed the life of a Portland man.

Lt. David DeGruchy said investigators would like to speak with anyone who may have witnessed the March 9 crash or who may have stopped to offer their assistance.

“We’re trying to gather as much information as possible. We want this to be a thorough investigation,” DeGruchy said Wednesday. “We’re trying to look back into time and piece together what happened as best we can.”

Police said a 2008 Dodge Caliber operated by 26-year-old Craig D. McPherson was heading west on Route 302 when a 2014 Subaru Forester driven by 25-year-old Brittney Hersom of Sanford crossed the center line and struck McPherson’s vehicle head-on about 8:25 a.m. McPherson was taken to Maine Medical Center in Portland where he died later that day. Hersom was treated at the hospital and released.

Hersom was driving home from work when the crash took place, according to DeGruchy.

DeGruchy said that, in addition to the police department’s investigation, the District Attorney’s Office is also reviewing the case. No charges have been filed. Anyone with information should contact Detective Paul Cox at 892-1919, extension 4417.

McPherson was employed as an assistant customer service manager at Hannaford supermarket in Windham.