"She's a 30 year-old young woman who works for the World Bank who, whilst working, was kidnapped in front of a ministry in Yemen. We call for her to be released as soon as possible. We're trying to localise her and we're doing everything to secure her release."
The World Bank official and her Yemeni driver have been taken by unidentified gunman in the country's capital, Sanaa.
Their whereabouts are still unknown.
Yemen has been in turmoil since Shi'ite Muslim Houthi militias seized the capital in September.
It's been common for tribesmen to take foreigners hostage in an attempt to put pressure on the authorities to free jailed relatives.
