A man identifying himself as a Venezuelan National Guard sergeant at a Caracas military outpost called for the removal of President Nicolas Maduro, a video circulating on social media shows.
The video did not show a significant movement of troops or military vehicles. Social media photos on Monday showed the presence of security forces in the area of the National Guard outpost.
Reuters news agency was unable to independently confirm the video.
The information ministry did not immediately reply to a request for comment.
Maduro was inaugurated on January 10 under an avalanche of criticism that his leadership was illegitimate following a 2018 election widely viewed as fraudulent, with countries around the world disavowing his government.
The United States and many Latin American nations say Maduro has become a dictator whose failed state-led policies have plunged Venezuela into its worst ever economic crisis, with inflation approaching two million percent.
Maduro has said a US-directed “economic war” is trying to force him from power.