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An ambush reportedly killed three women and six children and six more children are hurt. One is still missing.

The attach occurred less than 100 miles from the U.S. border.

Three SUVs set out from La Mora, about 70 miles south of Douglas, Arizona on their way to a wedding when the convoy came under fire.

"The oldest who was thirteen, he hid all the rest of the kids behind a tree on the side of the road," one relative of the family said.

The family is part of a religious settlement in the Sonora state, a section of Northern Mexico known for its drug violence tied to organized crime.

"We were always told if you're not in the mafia you'll be safe, they won't hurt you, they won't bother you after this incident, I know that's not true," the relative said.

The Mexican government has had recurring troubles with the country's cartels.

This new incident puts more pressure on Mexican authorities to act, their President saying he'll ask President Trump for help.

President Trump addressed the ambush Tuesday morning on Twitter saying, "This is the time for Mexico, with the help of the United States, to wage war on the drug cartels and wipe them off the face of the earth."