Gunmen used grenades and assault rifles in Saturday's attack at the Westgate mall in Nairobi. Somali militant group al-Shabab has claimed responsibility for the attack.
An estimated 10 to 15 militants remain in the shopping mall holding an unknown number of captives. The Kenyan military has entered the four-story mall and there have been sporadic gun battles. Some Kenyan military were seen carrying in at least two rocket propelled grenades. Earlier military helicopters hovered over the mall.
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