More than 300 members of a Mexican drug cartel operating in the United States have been arrested in a series of raids in 19 states.
The BBC reports the two-day operation, which involved thousands of police officers, is the latest aimed at the cartel known as La Familia.
It was part of Project Coronado, which has led to almost 1200 arrests over four years.
La Familia is based in the western Mexican state of Michoacan. It has been accused of carrying out bloody attacks on Mexican security forces.
United States Attorney-General Eric Holder on Thursday described the gang as demonstrating "an incredible level of sophistication and ruthlessness".
He said the raids had disrupted the cartel's operations, which "stretch far into the US".
Police and FBI agents seized $US3.4 million in cash, 144 weapons and more than 100 vehicles, as well as methamphetamine, cocaine and marijuana.
FBI Director Robert Mueller said La Familia had transformed in recent years "from a drug cartel to a sophisticated criminal organisation".
