The timing of the potential indictment, ‌which would need to be approved by a grand jury, was not immediately clear, but the official said it sounds imminent.

The potential indictment of the 94-year-old former ​president of Cuba and brother of Fidel is expected to focus ​on the downing of an aircraft, the official said on condition ⁠of anonymity.

CBS previously reported that the case relates to Cuba’s deadly ​1996 shootdown of planes operated by the humanitarian group Brothers to the Rescue.

Representatives for ​Cuba’s foreign ministry did not immediately respond to a request for comment outside of normal business hours.

A U.S. Justice Department spokesman did not immediately respond to a request ​for comment.

Trump’s administration has called Cuba’s current communist-run government corrupt and ​incompetent and is seeking to replace it.

The latest move comes as President Donald Trump ‌has ⁠heaped pressure on Cuba, effectively imposing a blockade on the island by threatening sanctions on countries supplying it with fuel, igniting power outages and delivering blows to its economy.

The U.S. Attorney’s Office for the Southern District ​of Florida has ​been overseeing an ⁠effort to examine potential criminal charges against senior Cuban government officials.

Officials from both countries acknowledged earlier this year ​that they were in talks, but the negotiations appeared ​to founder ⁠amid the ongoing US fuel blockade.

However, on Thursday, the Cuban government confirmed it had met with CIA chief John Ratcliffe.

Ratcliffe told intelligence officials in Cuba that ⁠the US ​was prepared to engage on economic security ​issues if Cuba made “fundamental changes,” a CIA official said.