UPDATE: Scarborough police investigate gunshots in Walmart parking lot

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SCARBOROUGH, Maine (WABI) - Police continue to investigate the circumstances of Friday night's shooting at a Walmart Supercenter in Scarborough.

Courtesy: WMTW

The shooting happened around 5:30 Friday evening.

A Scarborough police officer was inside the Walmart investigating a separate incident at the time. He was at the scene in a matter of minutes.

Police say 24-year-old Ryan Townsend of Saco is being treated for a gunshot wound at Maine Medical Center. He's currently in critical condition.

Authorities say they have questioned a man and woman about the incident but they are still trying to find a motive for the shooting.