Mondeor residents have arrested three suspects in connection with last Thursday’s killing of a school teacher, police said on Monday. Two men and a woman were apprehended by members of the public over the weekend and taken to the Mondeor police station for questioning, according to police spokesperson Inspector Mary Martins-Engelbrecht. Nandi Mhlongo, (31), was teaching a class at the Oliphantsvlei farm pre-school when two men entered the classroom and demanded to see the principal. They fired two shots at Mhlongo and fled. The teacher was taken to a clinic in Lenasia where she died.