Corpus Christi police are searching for a man who robbed a convenience store at gunpoint Saturday night. The robbery happened around 7 at the PMI in the 900 block of South Tancahua Street. Police say a man walked into the PMI store and flashed two guns at two clerks and demanded cash. Police believe the suspect was picked up in a green pick-up truck. The suspect is described as a white male standing five feet, nine inches. If you know anything about this crime, call Crime Stoppers at 888-TIPS.