Mexican federal police have captured Edgar Valdez-Villareal, 37, a leader in the Beltran Leyva drug cartel who is thought to be responsible for escalating violence such as the beheadings of rivals.

The Texas-born Valdez-Villareal, who is known as "the Barbie" because of his blond hair and blue eyes, brought thousands of kilograms of cocaine between 2004 and 2006. His cartel is thought to have brought 100 kilos a week into the Atlanta area using tractor trailer trucks that crossed the border in Laredo, the Atlanta Journal-Constitution reports.

The U.S. government had offered a $2 million reward for his capture.

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