Americans have been warned against travel to northern Togo and areas close to the Burkina Faso and Benin borders due to frequent militant attacks, according to the advisory published by the US State Department.

"Attacks may occur with little or no warning. The current travel policy for embassy personnel prohibits travel north of the town of Dapaong, along with the district of Kpendjal and Kpendjal-Ouest without special authorisation," the advisory said.

It also cautioned Americans against travelling to Sokode, Bafilo and Mango towns near the Benin border.

Northern Togo residents recently fled their homes after a militant attack on two villages bordering Benin killed 10 people.