"The Venezuelan people desperately need humanitarian aid", Pompeo said via Twitter. "The US and other countries are trying to help, but Venezuela's military under [Venezuelan President Nicolas] Maduro's orders is blocking aid with trucks and shipping tankers".
He went on to state that Maduro must allow humanitarian aid to reach the people of Venezuela.
READ MORE: Threat of Invasion of Venezuela Remains — Envoy to Russia
Guaido proclaimed himself Venezuela's interim president in January, and was immediately recognised by the US, Canada, and several other countries. Maduro has meanwhile called him a US "puppet" and accused Washington, which has stated that it has all options on the table with regard to a response to the crisis, of organising a coup in the Latin American country.