A second missing person case this winter may have police looking to the Charles River.

Waltham Police on Saturday announced the disappearance of 66-year-old Moody Street resident Leonard Quirk, who was last seen near a Rite Aid pharmacy walking toward the water on Tuesday, Feb. 16, spokesman Lt. Tim Maher told Metro.

The investigation now involves a partnership with state police, due to the proximity of his last known location to the river, Maher said. He couldn't provide additional details.

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Quirk was described in a post on the department's Facebook page as weighing 140 pounds, standing 5 feet 6 inches tall with brown eyes, thinning gray hair and scars on his face.

He is "extremely thin,"  walks with a cane and "has difficulty getting around," according to the post, which has been shared more than 800 times.

Police have asked anyone with information to contact the department at 781-314-3600.

A search in the Charles River is currently underway for 22-year-old Zachary Marr, of Harvard, who has been missing since Feb. 13, when he was last seen at Faneuil Hall's Bell in Hand Tavern.

Police last week reviewed video footage which reportedly shows Marr walking into the water under the Zakim Bridge.

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