NAIROBI, Kenya (AP) -- Kenyan police say a "major" assault by security forces has begun to end the two-day hostage crisis at a Nairobi mall, in which 68 people have died.
Kenya's Disaster Operation Center said late Sunday that "this will end tonight. Our forces will prevail."
Word of the Kenyan assault comes shortly after a large blast echoed from the mall, around the start of the operation.
Before the assault two helicopters hovered over the mall, skimming the roof. Al-Shabab militants reacted angrily to the helicopters on Twitter and said the Kenyan military action was endangering hostages.
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