The reward was announced in national newspapers and featured black and white photos of the 43 students, who went missing three weeks ago in the southern city of Iguala.
The reward applies to information on the whereabouts of the students or for the identification of those responsible for their disappearance.
Meanwhile, representatives of the students' families expressed wariness over the government's probe of the case. The disappearances have triggered an uproar in this country painfully used to drug-related violence.
The representatives raised their concerns after meeting with Interior Minister Miguel Angel Osorio Chong and Attorney General Jesus Murillo . . .
