Attack hits base serving U.S. troops in Kenya

A military base used by U.S. troops in Kenya was hit by an attack early Sunday.

Kenya's military said a pre-dawn attempt to breach security was repulsed, with at least four attackers killed.

The U.S. Africa Command confirmed the attack at Manda Bay Airfield on the country's east coast and said it is monitoring the situation.

This is a developing story, please check back for updates.