US unarmed drones track drug gangs in Mexico
US unarmed drones track drug gangs in
The US has been sending unarmed drones over Mexico since February to gather intelligence on major drug cartels, the Mexican government has confirmed.
The flights were made at Mexico's request and were supervised by the Mexican air force and other agencies.
It is the latest sign of growing US involvement in Mexico's campaign against violent drugs gangs.
Mexico confirmed the missions had been taking place after they were revealed by the New York Times newspaper.
Most of the drone flights have been over northern border areas, the scene of much of the drug-related violence that has left more than 34,000 dead since late 2006.