The former head of Venezuela’s military intelligence unit, Hugo Carvajal, is discussing his surrender with US authorities, three people familiar with the matter said on Saturday, after prosecutors charged him this week with drug trafficking alongside Venezuelan President Nicolas Maduro. Carvajal, a former general and ally of late Venezuelan leader Hugo Chavez, has been in hiding since a Spanish court in November approved his extradition to the United States. It was unclear when he could formally surrender to US authorities and the people declined to say. One person familiar with the matter said US authorities were in touch with Carvajal through a non-governmental intermediary trying to convince him to turn himself in, and there was a “50/50 chance” it would succeed. US officials have long sought Carvajal because they believe, if he is willing to cooperate, that he could provide a treasure trove of information on the alleged drug activities of Maduro and his associates. The US State Department declined to comment. The US Drug Enforcement Agency (DEA) and Justice Department did not immediately return requests to comment. Spain’s Justice Ministry declined to comment. On Friday, DEA agents flew to Colombia to remand in custody retired Venezuelan general Cliver Alcala, three people familiar with the matter said, after he agreed to work with prosecutors who charged him in the same case. The US government on Thursday indicted Carvajal, Alcala, Maduro, and a dozen other current and former Venezuelan officials on charges of “narco-terrorism”, the latest escalation of a pressure campaign by US President Donald Trump administration to oust the socialist leader. Attorney General William Barr accused Maduro and his associates of colluding with a dissident faction of the demobilised Colombian guerilla group, the FARC, “to flood the United States with cocaine.” ‘Narco-terrorism’: US indicts Venezuela’s Maduro, posts US$15 million reward Carvajal has repeatedly denied accusations he helped smuggle cocaine to the United States. During an extradition hearing in September, Carvajal said Washington was fabricating the drug trafficking charges to make him talk. Since leaving Venezuela, Carvajal has denounced Maduro and given his support to opposition leader Juan Guaido, who has staked a rival claim to the Venezuelan presidency with US support. Carvajal was arrested by Spanish police in April 2019 at the request of US authorities but Spain’s High Court initially ruled that he should be released and his extradition request denied. The court reversed that decision in November.