مقامات می گویند که حملات بمب گذاری توسط باندهای مکزیکی در حال افزایش است

Bomb attacks by Mexican gangs on the rise, officials say

MEXICO CITY, Aug 31 - A recent spate of bomb attacks has swept across Mexico, from car bombs to drones rigged with explosives, exposing an escalation in cartel violence that local authorities say has intensified over the past three years.