Maria Corina Machado, a prominent Venezuelan opposition leader, has been detained in Caracas during a protest against President Nicolas Maduro's planned inauguration.
Her political group, Comando con Venezuela, reported that she was "violently intercepted" by security forces while exiting the rally.
Eyewitnesses noted that security officers fired shots at motorcycles transporting Machado, highlighting the tensions surrounding the protest.
Supporters of Machado gathered in Caracas, calling for "libertad" (freedom), while pro-Maduro groups held counters demonstrating support for the president.
Venezuelan electoral authorities have declared Maduro the winner of the recent elections, but the opposition alleges their candidate Edmundo Gonzalez actually won.