Suicide Blast Kills 42 in Yemen Capital

People flee at the scene of a suicide attack in Sana'a, Yemen, Oct. 9, 2014.

Sandals with blood stains are seen at the site of a suicide bombing as Yemeni security officials gather debris in Sana'a, Oct. 9, 2014.

A Yemeni security official inspects objects near the site of a suicide bombing in Sana'a, Oct. 9, 2014.

Shi'ite Houthi rebels carry a dead man at the scene of a suicide attack in Sana'a, Oct. 9, 2014.

Security officials said that a suicide bomber set off explosives where supporters of the rebel Shiite Houthis were gathering, in the center of Sana'a, Oct. 9, 2014.

People congregate at the site of a suicide bombing as Yemeni security officials collect debris in Sana'a, Yemen, Oct. 9, 2014.