Two drivers were cited after separate accidents at the same Newton Centre intersection sent two elderly pedestrians to the hospital Monday. A 26-year-old Newton woman struck a 94-year-old pedestrian in Newton Centre as he crossed outside the crosswalk near the corner of Centre and Pleasant streets at around 5:35 p.m. Monday, police said. The driver left the scene, but came forward hours later, police said. She was cited for leaving the scene after causing personal injury, said police, who did not release the woman’s name. The man she struck remained hospitalized Tuesday at Beth Israel Deaconess Medical Center, but his injuries did not appear to be life-threatening. Just over an hour later, in the same intersection, police said, a 32-year-old Dedham woman struck a 90-year-old man, who suffered a shoulder injury. The woman was cited for failure to yield the right of way to a pedestrian in a crosswalk, police said.