U.S. President Donald Trump is seeking to impose tariffs on up to $60 billion of Chinese imports and will target the technology and telecommunications sectors, a source who had discussed the issue with the White House said on Tuesday.

A second source who had direct knowledge of the administration's thinking said the tariffs could come "in the very near future" and while they were targeted at technology and intellectual property, they could be much broader and the list could eventually run to 100 products.

The White House declined comment on the size or timing of any move.