TULSA, Oklahoma - Tulsa police are responding to an armed robbery at a Walgreens at 15th and Lewis.

Officers say two men came into the store just before 5 am. One of them approached a clerk with a knife and demanded money and a cigar. The two men then ran out of the store headed north. A K9 unit tracked them through a neighborhood but eventually lost the trail.

Police are looking at security footage now to identify the men.