U.S. officials are keeping vigil over a toddler shot while visiting Mexico while her family's vehicle came too close to a military convoy transporting suspected drug cartel members.

FOX News Radio's Eben Brown reports:

A toddler girl, just over a year and a half old is recovering in a San Antonio, Texas, hospital from being shot in the back by a Mexican soldier. The girl, aged one year, eight months, was with her family in the Mexican town of Camargo, which is across the border from Rio Grande City, Texas, they were visiting relatives.

But the Mexican military started firing on the family car when it apparently inadvertently came too close to a military transport carrying captured cartel members. Others in the car were wounded.

Mexican authorities say the town is overrun by waring factions of the Gulf and Zeta cartels.

Eben Brown, FOX News Radio.