Taliban suicide bombers have killed four Afghan soldiers and wounded Nato troops in an attack on a joint US-Afghan airbase in eastern Afghanistan.

A local police chief told the BBC that two civilians had been also killed in the attack on the base in Jalalabad.

Afghan intelligence officials said nine suicide attackers had been involved in the assault, and all had been killed.

Nato said the attackers had failed to penetrate the base. It is unclear how many of its troops were injured.