The U.S. government is warning that a Kenyan terror group with links to the Somali group al-Shabab may seek to target the American private sector in Kenya.

A recent report from the U.S. State Department s Overseas Security Advisory Council says the anti-West ideology shared by al-Shabab and the Kenyan terror group al-Hijra indicate that the groups "may seek to target the U.S. private sector in Kenya."

The report was released in the aftermath of al-Shabab s attack on Nairobi s Westgate Mall, a gunfire and grenade assault that killed at least 67 people.

The report calls for Americans to exercise extra vigilance in Nairobi, Kenya s capital, and the coastal city of Mombasa at clubs, hotels, resorts, shopping centers, restaurants and places of worship.