article_snippet.sent: The United Nations, citing reports from humanitarian partners, said 519 people have been killed and nearly 1,700 others wounded in the past two weeks.
article_snippet.sent: Tens of thousands of people have fled Tens of thousands of people homes and sought refuge in Djibouti and Somalia, Valerie Amos, under-secretary-general and emergency relief coordinator, said in a statement.
article_snippet.sent: Two humanitarian workers were killed Friday in Yemen.
article_snippet.sent: The brothers working for the local branch of the Yemen Red Crescent Society were shot in Aden while evacuating wounded people to a waiting ambulance, the International Committee of the Red Cross reported.
article_snippet.sent: The brothers working for the local branch of the Yemen Red Crescent Society were identified as Khaled Ahmed Bahuzaim and Mohammed Ahmed Bahuzaim.
article_snippet.sent: Al Qaeda fighters free 270 from Yemeni prisons .
article_snippet.sent: CNN's Barbara Starr contributed to this report.
highlights_snippet.sent: Two humanitarian workers killed .
  