Pompeo's tweets suggest the imminent resignation of the US ambassador to China, Associated Press reported.

Pompeo in a tweet on Monday thanked Ambassador Terry Branstad for more than three years of service.

In another tweet, the US Secretary of State announced Branstad's contribution to rebalancing US-China relations to make them result-oriented, mutual and fair.

The State Department has not yet commented on this information.

The news agency notes that the US ambassador recently found himself at the center of a controversy over the rejection of a newspaper column submitted by the Chinese newspaper People's Daily. It is not yet known whether his probable departure from the post of an ambassador is related to this incident.