Altemio C. Sanchez is an American serial killer who is known to have murdered and/or raped at least four women, and raped between 9-15 girls and women in and around Buffalo, New York, during a 25-year span from 1981–2006. Sanchez is also known as the Bike Path Rapist and Bike Path Killer. Murders for which Sanchez confessed responsibility include those of three women: Linda Yalem, a sophomore at the University at Buffalo (UB), studying communications, and training for the New York City Marathon, who was raped and killed on September 29, 1990 along the Ellicott Creek Bike Path; Majane Mazur, who was known to have been a prostitute, murdered in November 1992 near the Amtrak rail line in downtown Buffalo; and Joan Diver, a nurse, wife of a University at Buffalo chemistry professor, and mother of four, who was beaten and murdered on September 29, 2006, the anniversary date of Linda Yalem's death. Diver's body was found on a bike path in Newstead, New York, on October 1, 2006. The killer acquired the nickname because some of his crimes took place near secluded bike paths. On May 16, 2007, Sanchez pleaded guilty to the murders of Linda Yalem, Majane Mazur, Joan Diver, and an unnamed victim.