(AMMON, Idaho) Another arrest has been made in the robbery of the Country Corner Jr. store in Ammon. Matthew Baker of Idaho Falls was taken into custody by Bonneville Country Sheriff’s Detectives Wednesday night. Investigators say they got a tip Tuesday night that the 21-year-old Baker was the man responsible for the crime. He was arrested and charged with robbery. The clerks working the night of the robbery describe the robber as male, wearing all black, and entered through the employee entrance. He was wearing a mask, brandished a pistol and demanded cash. Another clerk, Darin Christensen, has also been arrested and charged with the crime after money from the robbery was discovered in his car. Detectives apparently recovered $800.