The attack targeting the Paramacay military base in Venezuela was carried out by a group of civilians, the country's Defense Minister Vladimir Padrino Lopez said Sunday.
Venezuelan security forces have taken up position outside the office of the country's chief prosecutor.
"Two years of work, it could be less but we will not limit ourselves", said Diosdado Cabello, a government official and member of the assembly. He was flanked by about a dozen men in military uniforms.
Officials said several of the "terrorists" had been arrested and insisted all was normal across the country.
"This is not a coup d'etat", added Caguaripano, who was removed from the National Guard in 2014, according to a document seen by Reuters.
Oil-rich but economically ailing Venezuela has a long history of instability.
Most of West Virginia under flash flood watch
Saturday: Winds will pick up to almost 20 miles per hour , with rain accumulating between a half and three-quarters of an inch. The heaviest, most widespread rain will arrive late this afternoon and this evening before tapering off by sunrise Saturday .
Appointed in 2007 by president Hugo Chavez (1999-2013), Ms. Ortega was the main figure of institutional to dare to challenge publicly his successor.
Venezuelans view the armed forces as the key power broker in their country, and opposition leaders have repeatedly exhorted the military to break with Maduro over what they call his erosion of democracy and brutality toward demonstrators.
But the military leadership continues to publicly profess loyalty to the president and his government. The captured subjects confessed to having been hired in the states of Zulia, Lara and Yaracuy by activists of the Venezuelan extreme right (the opposition) in connection with foreign governments, the Maduro Regime claimed.
Discontent is higher among lower-tier officials, who are often sent to control rowdy protests and are paid just a few dozen US dollars a month.
In a speech to new assembly delegates Friday, Delcy Rodriguez told "fascist" opponents of Maduro that "justice is coming".
And on Saturday, when the newly-elected assembly held its first session, it voted to oust a chief prosecutor and major Maduro critic.
The South American nation has for months been in the throes of a political crisis with protests that have left more than 100 dead, almost 2,000 wounded and over 500 detained.
Maduro has described his convening of a new constitutional assembly as necessary to re-establish order in a country rocked by four months of protests in which 130 people were killed and thousands were injured and arrested.