Venezuelan President Nicolas Maduro's stepsons have been accused of profiting off emergency food imports aimed at reducing malnutrition.
The US Treasury Department has announced sanctions against three of Venezuelan President Nicolas Maduro's stepsons, a Colombian businessman and six others for running a "corruption network" that profited from emergency food imports.
The US has in recent months escalated sanctions against Venezuela, which is struggling with a political and economic crisis that the United Nations says has left a quarter of its 30 million people in need of humanitarian aid.
The new restrictions, announced on Friday, target Mr Maduro's stepsons Walter Jacob Gavidia Flores, Yosser Daniel Gavidia and Yoswal Alexander Gavidia Flores, whom the US says collaborated with Colombian businessman Alex Nain Saab Moran and his business partner Alvaro Pulido to profit off importing emergency food into the country as it struggled with rising malnutrition.
"What Treasury has described today is an extraordinarily elaborate network, whose purpose is to steal food from the poorest Venezuelans and build up profits for regime members and their families," a senior US official said on condition of anonymity.
As its economic crisis worsened, Venezuela's government in 2016 created a program to provide subsidised food to the poor, which Mr Saab and a business partner organised so that food would be imported "at the most profitable rate for themselves," the US Treasury said in a statement.
"Under Maduro's watch, Saab reaped substantial profits and imported only a fraction of the food needed for the CLAP program."
It added that he "laundered hundreds of millions of dollars in corruption proceeds around the world," while paying off Mr Maduro's stepsons for access to contracts.
Despite the sanctions, Mr Maduro said the food subsidies would continue.
"Not even with a million sanctions will CLAP stop," he said, adding that the food "belongs to the Venezuelan people."
The program had 16.3 million beneficiaries in 2018, according to a study by the main universities in Venezuela.
Opposition leader and self-proclaimed interim president Juan Guaido denounced the sanctioned individuals, saying they had "enriched themselves by taking advantage of the suffering" of the Venezuelan population.
The sanctions prevent Mr Saab, Mr Maduro's stepsons as well as six others involved in the alleged scheme from accessing the US financial system or doing business there.
Mr Saab and Mr Pulido were charged with money laundering, moving some $350 million out of Venezuela either to the US or through the US to foreign accounts they owned or controlled.
The two had been hired in November 2011 by Mr Maduro's predecessor and mentor Hugo Chavez to build low-income housing.
Mr Saab, 47, and Mr Pulido, 55, face up to 20 years in prison for the charges.
Also sanctioned are 13 companies registered around the world that the US Treasury said were part of "a sophisticated network of shell companies" involved in the food importation scheme.
In January, Mr Guaido declared himself acting president, branding Mr Maduro a "usurper" over his re-election last year in a poll widely believed to have been rigged.
But despite the support of some 50 countries including the US, Mr Guaido has been unable to dislodge him from power.
Representatives of the two sides have in recent weeks been negotiating in Barbados to resolve the political impasse.