US President Donald Trump earlier said Maduro was taken out of the country after strikes.
Deputy Secretary of State Christopher Landau added Maduro would "finally face justice for his crimes."
The Venezuelan government confirmed the capture, but Vice President Delcy Rodriguez stated the location of Maduro and his wife is unknown, saying: "We demand proof of life."
Iran has condemned the attack on Venezuela as a “blatant violation of it’s national sovereignty and territorial integrity”.