Ruthless cartel's sibling leaders — known as "Z-40" and "Z-42" — charged in U.S., accused of murders and torture

The sibling ex-leaders of Mexico's violent Zetas cartel were arraigned on Friday in the United States on charges including drug trafficking, firearm possession and money laundering, the U.S. Department of Justice said.  

Brothers Miguel and Omar Trevino Morales — aliases "Z-40" and "Z-42" — led one of Mexico's most powerful and feared organized crime groups until its collapse.

They were among the 29 drug suspects that Mexico expelled to the United States last month, as it faces mounting pressure from US President Donald Trump to tackle drug smuggling.