The Administration of former U.S. President Barack Obama had been working on the dismissal of Ukraine's Prosecutor General Viktor Shokin, according to former Secretary of State John Kerry.

"I will tell you because as Secretary of State I was deeply involved in this. All of us in the Administration were trying to get rid of that prosecutor. From Obama to the secretary of state, to the vice president – all of us were working on that – the ambassador…" he said, according to the Voice of America.

"We knew if Ukraine was going to survive, win the Revolution in the end, and the Maidan, they had to get rid of that prosecutor. And they did," Kerry said.

As UNIAN reported earlier, Viktor Shokin claimed he survived mercury poisoning this year and suggested, providing no evidence, that Americans could allegedly be involved in the attempt on him.