Mexico has made an unspecified number of arrests over last week’s massacre of three women and six children of dual U.S-Mexican nationality in the north of the country, Security Minister Alfonso Durazo said on Monday. “There have been arrests, but it’s not up to us to give information,” Durazo told reporters in Mexico City. The women and children from families of U.S. Mormon origin who settled in Mexico decades ago were killed last Monday on a remote dirt road in the state of Sonora by suspected drug cartel gunmen, sparking outrage and condemnation in the United States. Durazo said that...