Venezuela's Supreme Court has decreed to put the deputy speaker of the National Assembly, Edgar Zambrano, in pretrial detention at a military jail in the capital Caracas.
The court said that Zambrano was imprisoned over treason, conspiracy and civil rebellion.
The deputy speaker was arrested in the wake of the failed coup-d'etat in the country instigated by opposition leader Juan Guaido.
Previously, US Secretary of State Mike Pompeo demanded that Zambrano be immediately released, calling his detention ‘unacceptable and illegal'.
Responding to the calls, the Venezuelan Foreign Ministry called Pompeo's demand presumptuous.
Guaido attempted to oust Maduro on 30 April, staging a demonstration in front of the La Carlota military base in Caracas. However, the attempt failed and the office of the Venezuelan prosecutor general requested 18 arrest warrants be issued in connection with the coup attempt.