An unarmed security guard was critically injured in an early-morning shooting at a Nashville pharmacy.

The incident happened early Monday morning at a 24-hour Rite Aid on West End Avenue.

UPDATE: Metro Police tell me the suspect was wearing a bandana and demanded money. 3 employees including the security guard were inside @NC5pic.twitter.com/cVHGIqvekB — Blayke Roznowski (@NC5_Blayke) October 9, 2017

Officials with Metro Nashville Police said the suspect entered the store at 4:08 a.m. and approached three employees – one of whom was the security guard, identified as 22-year-old Garion Bogard.

Police said the suspect demanded money and told the clerks he should “shoot both of [them] for moving slow."

It's unclear at this time why Bogard was shot. He was taken to Vanderbilt University Medical Center.

The suspect was described as being 5’8” tall with a thin build. He wore a black beanie hat with a black bandana to cover his face and was draped in a blanket with hearts and X’s and O’s.

Gunman shot & critically wounded unarmed security guard during Mon. 4 a.m. robbery at Rite Aid, 2416 West End. Know him? Call 615-862-8600. pic.twitter.com/CaOmXH8Ua3 — Metro Nashville PD (@MNPDNashville) October 9, 2017

Police said he fled with cash in a bag. The shooting remained under investigation.

Anyone with information was asked to call Crime Stoppers at 615-74-CRIME. You can also send an electronic tip by texting the word “CASH” along with the message to 274637(CRIMES) or do so online.