(From top) Freed German hostages Rosemarie Thielebein, Heinrich Thielebein and Julia Thielebein attend a meeting with Yemeni officials at Yemen's Interior Ministry in Sana'a, Friday. Kidnappers released the three – an aid worker based in Yemen and her visiting mother and father – who were kidnapped Monday by Bani Dhabyan tribesmen in Dhamar province. The Yemeni government agreed to meet some of the kidnappers' conditions, including paying a ransom and releasing some tribesmen from prison, mediators said. One mediator said a ransom of 20 million Yemeni riyals ($100,000) was paid by the Yemeni government.