The International Committee of the Red Cross says unidentified gunmen in Yemen's capital kidnapped a Tunisian woman working for the group.

Spokeswoman Rima Kamal says the Tunisian woman and a male Yemeni colleague were on their way to work in Sanaa on Tuesday morning when they were stopped by the gunmen. Kamal says the kidnappers released the Yemeni man hours later.

Shiite Houthi rebels captured Sanaa more than a year ago, in an ongoing conflict pitting them against pro-government forces, southern separatists and various local militias. Saudi Arabia views the rebels as a proxy of its archrival Iran, and has led a military coalition against the Houthis since March.