PRESS RELEASE FROM THE SPOKANE COUNTY SHERIFF'S OFFICE: On Thursday, May 23, 2013, Spokane County Major Crime Detective Kirk Keyser arrested 23-year-old Sean Martin for three counts of first degree robbery. Through his investigation, Detective Keyser determined Martin was responsible for three McDonald's restaurant robberies that occurred in Spokane County on May 3rd, 2012, May 14th, 2013, and May 21st, 2013, and one in Colville Washington in September, 2012. The robbery on May 3rd occurred at McDonald's located at 1818 N. Monroe. The robbery on May 14th was at the McDonald's at 6321 N. Monroe and the robbery on the 21st took place at the McDonald's located at 2324 1st St. in Cheney Wa. Detective Keyser worked with investigators from the Cheney Police Department to develop information Martin was responsible for the Cheney robbery. At the time of Martin's arrest he was armed with a firearm and a large amount of ammunition. During the course of the investigation, quantities of U.S. Currency were recovered from his residence and his vehicle. Additional units that assisted with this investigation were the U.S. Marshall Service and the Sheriff's Office Investigative Support Unit. Martin is currently being held in Spokane County Jail on the three robberies that took place in Spokane County.