Ramos and his crew were interviewing President Nicolas Maduro at the Miraflores Palace in Caracas, when they were detained because Maduro didn't like the questions, the network said.
Daniel Coronell, who serves as president of the news for Univision in the United States, said on Twitter that his employees were being held against their will and had their technical equipment confiscated.
Ramos and the crew members were eventually released.