Venezuelan Attorney General Tarek Saab said Tuesday the acting president and five directors of Citgo Petroleum Corp. tried to defraud the nation. American citizens were among the executives at Citgo Petroleum Corp. that the Venezuelan intelligence agency arrested here on Tuesday, a development likely to exacerbate strains between Washington and Caracas. Venezuela arrested six top executives of the U.S. subsidiary of state-oil company Petróleos de Venezuela SA, including its acting president, as part of what officials called an anti-corruption purge. At least four of those arrested are naturalized U.S. citizens, a Citgo official said on Wednesday. A U.S. State Department spokesman declined to comment, citing privacy laws. Another U.S. official said the American government is monitoring the arrests, citing “significant congressional interest.” More In a statement, Houston-based Citgo said it was looking into the corruption allegations. A Citgo spokesman declined to comment further. Relations between Washington and Caracas […]