SPOKANE, Wash. -

The Spokane Police Department is investigating another coffee stand robbery, this time at Deb's Espresso at 921 E. Houston. It's the 9th armed robbery in Spokane in about a month.

The call came in at 3:45 p.m. Monday.

Officers on the scene say the robber was a white male in his late 20s who displayed a gun to the employee, demanded money, and fled from the scene heading northbound on foot.

The suspect was wearing jeans, a dark blue sweatshirt, dark hat and what was described as woman's sunglasses.

Detectives are at the espresso stand interviewing witnesses and collecting fingerprints while patrol officers are focusing on area coffee stands and asking the public to report any suspicious activities to Crime Check at 456-2233.

SPD Lt. Joe Walker says the recent robberies are changing the ways officers patrol.

"The patrol officers right now have been watching a lot of the fast food restaurants and coffee shops the best we can in between calls," Lt. Walker said.

The suspect description is also similar to the other robberies. Police say the crimes may all be related.

"Similar suspect description, similar targets, similar method of operation when the robbery subject comes in and confronts people," Captain Brad Arleth said at a news conference Friday.

The other robberies include three Subway restaurants, the Yoke's off Indian Trail, Mug Shots Espresso stand on Garland, and three at Jitterz Java where some employees now carry guns.

"I would rather have it and need it, then need it and not have it," Krystal Cogswell told KXLY.

Spokane Police are hoping to find the suspect, or suspects, and asking for the public's help to stop a tenth robbery from happening.

"We need to make sure the public is aware of this because they're the best eyes and ears for us and the information they have tends to be very beneficial," Lt. Joe Walker said.