Mexico City: Shouting "Ayotzinapa lives," thousands of people demonstrated in this capital to mark the four-month anniversary of the disappearance of 43 teaching students in the southern state of Guerrero and to demand that they be found alive.

Four contingents of people including relatives, teachers, students and citizens Monday marched from four different points around the city toward the Zocalo, the huge central plaza, where a gigantic rally was to be held for the students who disappeared on Sept. 26 after being taken into custody by local police and then, apparently, turned over to a criminal group.