Trump: US has seen no proof Navalny was poisoned

President Donald Trump said Friday the U.S. doesn't know whether Alexey Navalny was poisoned.

At a White House news conference, Trump declined to accept the German government's assessment that the Russian opposition leader was attacked with a nerve agent.

"I think it's sad, it's tragic. It's terrible. It shouldn't happen. We haven't had any proof yet. But I will take a look," Trump said.

Navalny, a Kremlin critic and corruption investigator, fell ill on a flight to Moscow on Aug. 20 and was taken to a hospital in the Siberian city of Omsk.

He has been in an induced coma in a Berlin hospital since he was flown to Germany for treatment more than a week ago.

German authorities have said that tests showed that he had been poisoned with a chemical nerve agent from the Novichok group.

Russian authorities have appeared reluctant to investigate what caused Navalny’s condition, saying there had so far been no grounds for a criminal investigation.