It's not over, Somali terrorists Al-Shabaab say

(CNN) -- We're not done yet.

That was the message terrorists of Al-Shabaab gave to Kenya on Wednesday, as officials still sorted through rubble and clues left in the wake of the recent massacre that took 67 lives at a Nairobi shopping mall.The Somali militant group handed the threatening statement to regional media, which passed it on to CNN.

For four days, starting on September 21, Al-Shabaab fighters spread gunfire and flames through Nairobi's Westgate Shopping Mall, leaving it partially destroyed, stained in blood and littered with bodies.