The head of the US military's Central Command held talks in Tajikistan Thursday on securing the border with Afghanistan, which is often crossed by drug runners and militants.

"We appreciate the friendship and support of the Tajik people … We cooperate with the Tajik government to secure the Tajik-Afghan border," Lieutenant-General Martin Dempsey told reporters in Dushanbe.

Dempsey held talks with Tajik President Emomali Rakhmon at which the two were due to discuss "regional security and joint action against international terrorism," a Tajik foreign ministry spokesman told AFP.

The United States last year donated 20 million dollars (12.8 million euros) in equipment and training to help Tajikistan improve patrols and customs checks along the mountainous 1,400-kilometre (870-mile) border with Afghanistan.