Honolulu police are looking at the possibility that three retail stores between Kakaako and Waikiki were robbed by the same armed man in recent weeks.

In all three incidents, a black, semi-automatic handgun was flashed by the robber, witnesses said.

The two robberies Monday happened within an hour of each other.

In the first case, a man in his 20s walked into Posh Liquor on Kaiulani Avenue at about 3:40 p.m. and demanded money of the cashier. The robber then fled on foot, police said.

At about 4:15 p.m., the clerk at Rix Island Wear at Ward Warehouse was robbed in a similar fashion.

No one was injured in either incident.

Police are also still looking for a man they believe robbed the Keeaumoku Street Walgreens on the afternoon of Aug. 18. A handgun was also seen in that incident and the robber also fled on foot.

HPD spokeswoman Michelle Yu said “we are looking at the possibility that the robberies may be connected.”

In the Walgreens case, the suspect is described as between 30 and 40 years old, about 6-feet-1, weighing between 160 and 210 ponds, and wearing a black, hooeded sweatshirt, blue camouflage long pants, and a baseball cap.

Rick Ralston, owner of Rix Island Wear, said his clerk Christine Aikau gave the exact description for the man who robbed her on Monday.