Police are investigating a suspicious death after a body was discovered Saturday in the Calvary Cemetery in Roslindale, according to Officer Katherine Shea of the Boston Police Department. The death is being investigated by the Boston Police Homicide Unit, she said. Police received a call at 10:46 a.m., and officers were dispatched to the cemetery, where they observed a man with gunshot wounds. He was pronounced dead when emergency responders arrived, Shea said. The victim’s age and identity were not released, pending notification of family.