MEXICO CITY, Muharram 8, 1436, Nov 1, 2014, SPA -- Mexico has questioned local police over the disappearance and killing of three U.S. siblings in the troubled northeastern state of Tamaulipas, the state attorney general said on Saturday, Reuters reported. Erica, 26, Alex, 22, and Jose Angel Alvarado, 21, went missing on October 13 from the cartel-riddled border city of Matamoros. Their decaying bodies were found on Oct. 29 along with that of Jose Guadalupe Castaneda, a Mexican citizen, the Tamaulipas state attorney general's office said in a statement. -- SPA 21:57 LOCAL TIME 18:57 GMT www.spa.gov.sa/w