The lawmakers say National Assembly Vice President Edgar Zambrano was in his vehicle when it was surrounded by heavily armed police outside his Democratic Action party's headquarters Wednesday.
But more arrests may be coming soon, as Diosdado Cabello, the right hand of Mr Maduro, hinted on Wednesday, saying three more members of the opposition who "participated actively in the coup" were going to be arrested within hours. While Washington is supporting the opposition and threatening to use "any options" to oust Maduro and restore democracy in the country - eventually including military intervention - Russian Federation backs Maduro's regime emphasizing the respect of the principles of sovereignty and non-interference in internal affairs.
President Trump is questioning his administration's aggressive strategy in Venezuela following the failure of a US -backed effort to oust President Nicolás Maduro, complaining he was misled about how easy it would be to replace the socialist strongman with a young opposition figure, according to administration officials and White House advisers.
The Supreme Court had earlier accused the politicians of conspiracy, rebellion and treason.
The second one is linked to the role of big powers in the internal political struggle in the country, as the United States support the opposition and their call for fair and free elections, and Russian Federation backs the current regime in power.
"We Democrats will remain on war footing", he said.
The United States, European Union and several Latin American states have criticised Mr Zambrano's arrest.
Blanco was one of the ten opposition lawmakers who was stripped of parliamentary immunity by the Supreme Court this week. "If he is not immediately freed, there will be consequences".
Venezuela has suffered five years of recession that has seen more than 2.7 million people flee poverty, hyperinflation, food shortages and insecurity since 2015, according to United Nations figures.
Guaido's chief of staff, Roberto Marrero, was arrested in March and remains in jail.
"If we can talk about a coup d'etat in Venezuela, here it is; the dismantling of the national parliament", Guaido told a news conference, accusing Maduro's regime of "state terrorism".