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Forensics investigators work next to the collapsed upper car park at the Westgate Mall in Nairobi, Kenya Tuesday, Oct. 1, 2013. Kenyan President Uhuru Kenyatta says Kenya will keep its troops in Somalia to help that country's beleaguered government battle the armed Islamic extremist group al-Shabab, which attacked the mall in Nairobi on Sept. 21 claiming at least 67 lives. (AP Photo/Jason Straziuso)

Aftermath of Kenya mall attack

Kenya's president told Somalia's leaders on Tuesday to "put their house in order", in a sign of frustration at the festering instability in the neighboring country after members of a Somali militant group attacked a Nairobi shopping mall.

The al Qaeda-linked al Shabaab group said it raided the Westgate center, killing at least 67 people, in revenge for Kenya's military campaign against its fighters inside Somalia. (Reuters) 

Photos of the Kenya mall attack