A group founded by Cuban exiles known as Brothers to the Rescue is at the center of the U.S. Justice Department’s decision to seek an indictment against Cuban leader Raúl Castro.

The U.S. effort against Castro comes as President Donald Trump has grown increasingly frustrated with the Cuban government’s ability to remain in power.

The Justice Department is preparing to seek an indictment against former Cuban President Raúl Castro, three people familiar with the matter tell The Associated Press.

The Trump administration is escalating its regime change campaign in Cuba.