United Nations, April 27 (RHC)-- Parents and relatives of the 43 students missing in the Mexican state of Guerrero have marked seven months since their loved ones disappeared. Some of the parents and relatives converged on New York City after traveling across the United States in caravans.

On Sunday, the family members marched to the United Nations, asking the UN to pressure Mexico to reopen the investigation into the students’ disappearance and calling for the U.S. to stop backing Mexico’s drug war under Plan Mérida.

The Mexican government has claimed that the students were attacked by municipal police acting under the corrupt mayor of Iguala, then turned over to drug gang members who killed and incinerated them. But Mexican news reports point to a role by federal authorities.