A 31-year-old pedestrian was seriously injured Saturday after being hit by a truck in a Costco parking lot in Elkridge.

Howard County police say Chun Yuan Leon Cheng of Jessup remains in critical condition Monday at the University of Maryland Shock Trauma Center.

Police said the pedestrian was struck Sunday around 2 p.m. while crossing the grocery store parking lot in the 6600 block of Marie Curie Drive. Joseph Zowd of Jessup, 45, was driving the 2010 Ram 1500 that struck Cheng, police said.

Zowd, who continued traveling in the parking lot before stopping, may have suffered a medical emergency prior to striking the pedestrian, police said. Zowd was transported to Howard County General Hospital for evaluation. A passenger in the Ram was not injured.

An investigation is ongoing.

This article has been updated.

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