St. Cloud Police are investigating a pair of cafeteria change machine thefts where the suspect posed as a repairman. Police say the suspect is described as a white man in his 30's or 40's, about 5-feet-8 to six feet tall, clean cut and with a heavier build. Police say he walked into a business in south St. Cloud near the Skatin' Place in south St. Cloud and took change from the machine Thursday evening.