Gen Salvador Cienfuegos Zepeda is accused of helping a Mexican cartel smuggle drugs into the US.
Read moreEnrique Pena Nieto
BreakingUS, Canada and Mexico sign North America trade deal
Copyright: ReutersImage caption: (l-r) Mexico"s President Enrique Pena Nieto, US President Donald Trump and Canada"s Prime Minister Justin Trudeau The US, Canada and Mexico have signed a new trade deal at the G20 summit in Argentina.
Donald Trump, Justin Trudeau and Enrique Pena Nieto took part in signing the pact which is officially known as the United States-Mexico-Canada Agreement (USMCA).
US President Donald Trump had promised to revamp the existing North American Free Trade Agreement or NAFTA during his campaign.
Despite the signing ceremony today, legislators from all three countries still have to approve the pact.
By Will Grant
BBC News, Iguala