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A woman places a candle on photos of the missing students during a protest against the disappearance of 43 students from the Isidro Burgos rural teachers college, in Mexico City, Wednesday, Oct. 22, 2014. Tens of thousands marched in Mexico City's main avenue demanding the return of the missing students. The Mexican government says it still does not know what happened to the young people after they were rounded up by local police in Iguala, a town in southern Mexico, and allegedly handed over to gunmen from a drug cartel Sept. 26, even though authorities have arrested 50 people allegedly involved. They include police officers and alleged members of the Guerreros Unidos cartel. (AP Photo/Eduardo Verdugo)
A woman places a candle on photos of the missing students during a protest against the disappearance of 43 students from the Isidro Burgos rural teachers college, in Mexico City, Wednesday, Oct. 22, 2014. Tens of thousands marched in Mexico City's main avenue demanding the return of the missing students. The Mexican government says it still does not know what happened to the young people after they were rounded up by local police in Iguala, a town in southern Mexico, and allegedly handed over to gunmen from a drug cartel Sept. 26, even though authorities have arrested 50 people allegedly involved. They include police officers and alleged members of the Guerreros Unidos cartel. (AP Photo/Eduardo Verdugo)

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Ex-mayor linked to missing students

A former mayor is a "probable" suspect in the disappearance of 43 students who were kidnapped in Mexico, authorities say.

Ex-mayor linked to missing students

A former mayor is a "probable" suspect in the disappearance of 43 students who were kidnapped in Mexico, authorities say. The disappearance of 43 students continue to puzzle Mexican authorities. Rafael Romo reports.