As many as three people are believed to have been injured in a shooting in San Francisco’s North Beach neighborhood this morning, police said. Officers responded to reports of shots fired at Grant Street and Columbus Avenue at around 1:30 a.m., Officer Albie Esparza said. Three men in their 20s were taken to hospitals with gunshot wounds. Information on their respective conditions was not immediately available. Plainclothes police officers who witnessed the shooting attempted to stop at least one fleeing suspect, Esparza said. The suspect reportedly turned and shot at the officers, prompting at least one officer to fire back. No one was hit in the exchange of gunfire, Esparza said. The suspect was taken into custody. A firearm was also collected by police. It was still unclear at 3 a.m. if one of the three shooting victims could possibly be a suspect, Esparza said. Further suspect information was not yet available. The shooting was still under investigation.