By CBS3 Staff

PHILADELPHIA (CBS) — Family, friends remember Christine Lugo Sunday afternoon as police desperately try to find her killer. Lugo was killed during a robbery at a Dunkin’ in North Philadelphia.

A memorial continues to grow for the store manager at the Dunkin’ Donuts on West Lehigh Avenue. A vigil was held to remember the mother of two on Sunday afternoon.

READ MORE: Armored Truck Driver Fends Off Would-Be Robber In North Philadelphia, Police Say

Surveillance video released by Philadelphia police shows a gunman, armed with a revolver, approaching a Dunkin’ manager as she was opening her North Philadelphia store just after 5 a.m. Saturday.

READ MORE: Amazon Looking To Hire 3,900 Workers Throughout Delaware Valley Ahead Of Holiday Rush

Police are asking for the public’s help identifying the suspect. The gunman was wearing a blue, zip-up hooded sweatshirt with blue gloves and a blue mask.

MORE NEWS: Colin Powell's Death From COVID-19 Highlights Risks Millions Of Americans Still Face

Anyone who recognizes the suspect is urged to contact the police.