Suicide Bomber Kills 13 on Israeli Bus

JERUSALEM - A suicide bomber blew himself up Tuesday on a packed bus on a main thoroughfare in Jerusalem, killing at least 13 people and wounding 80 more, a rescue service said.

Nobody immediately claimed responsibility, which killed three children.

The blast on the extra long bus, which had two passenger sections that were full, went off shortly after 9 p.m.

Shocked survivors, including several crying children with blood-smeared faces, were carried away from the scene. A paramedic cradled a little girl drenched in blood, and two others escorted an elderly woman.

The militant Islamic Jihad also has said it would avenge the killing of a senior figure by Israeli troops last week.

U.N. chief killed in Baghdad explosion

Explosion rips through U.N. headquarters in Baghdad, Iraq.

BAGHDAD, Iraq (CNN) -- The U.N. special representative in Iraq died Tuesday in a bomb explosion that ripped through the organization's headquarters in Baghdad, U.N. officials in New York announced.

Sergio Vieira de Mello was among the 17 killed and 100 injured when a truck bomb exploded immediately beneath the window of his office in the Canal Hotel. He was trapped in the rubble.