Anchorage Police Department officials are seeking public help to investigate two local hit-and-run vehicle-pedestrian crashes, including one which killed a man and another which left a woman injured.

Though the crimes have been outstanding for some time before APD spokesperson Jennifer Castro’s Thursday statement, she says investigators have uncovered enough strong evidence to believe the public could tip the balance in the cases.

“Sometimes after an incident, people hear information or realize they may have actually witnessed something that was a part of a crime,” APD traffic investigator Steven Buchta said in the statement. “It’s important that people provide this information to police because it could be the piece that helps us solve the puzzle and bring justice to the victims and their families.”

On October 16, just before 3 a.m., 36-year-old Corbin Grassman was struck and killed by a full-sized pickup in the northbound lanes of the Old Seward Highway near its intersection with 69th Avenue. As his family challenged the driver in the crash to come forward, APD requested additional surveillance video of the crash from area businesses with few details immediately emerging.

In a second crash just before 11 p.m. on April 25, Castro says pedestrian Cynthia Sabon was struck and injured by a vehicle near the intersection of the New Seward Highway and Benson Boulevard, next to the Sears Midtown Mall.

“The suspect vehicle is described as a silver, Pontiac Grand Am style, four-door sedan with a missing right (passenger side) outside mirror,” Castro wrote. “The suspect vehicle fled south on New Seward after the collision.”

Castro relayed Channel 2 requests for more details on the crashes to both cases’ investigators Thursday. She says that Sabon’s injuries were significant but not life-threatening.

“It was broken bones,” Castro said. “It could have an impact on her ability to walk.”

Anyone with information on either hit-and-run crash is asked to call APD at 786-8900 or Crime Stoppers at 561-STOP; people can also submit tips anonymously, with the possibility of a reward, at the Crime Stoppers website.

Channel 2’s Chris Klint contributed information to this story.