U.S. was warned about Kenya mall attack

U.S. intelligence received reports of a serious threat in Kenya before last week's terrorist attack at a Nairobi mall that left 62 dead and more than 150 injured.

U.S. intelligence received reports of a serious threat in Kenya before last week’s terrorist attack at a Nairobi mall that left 62 dead and more than 150 injured, NBC News reported.

Officials said that NSA reviewed intelligence of a “credible” threat.

Kenyan police arrested nine suspects tied to the attack. Al Shabbab, a Somali terror group tied to Al Qaeda, had claimed credit for the attack.