A police chief in southern Afghanistan has been fired after an insider attack saw two Afghans in police uniforms pull their guns on foreign troops, according to the Pajhwok news service.

Tuesday's dismissal in the southern province of Kandahar, comes after the death of one foreign service member and thei injury of another in the attack in the province's Spin Boldak district on Sunday.

Javed Faisal, provincial spokesman, told the Pajhwok news agency, that Colonel Gul Mohammad, police chief, had been dismissed for failing to prevent the incident.

“The Spin Boldak police chief was terminated for failing to prevent suspected people from joining the police force. He also failed to prevent the attack on foreign troops,” Faisal told the Afghan wire service.

Mohammad, who had previously served as chief of police in Takhta Pol district, is being interrogated. If found guilty, Mohammad can be tried under the Central Asian nation's military law.

Mohmmad's dismissal marks the first instance of an Afghan official being penalised for the so-called "green-on-blue" attacks, which have so far killed 40 foreign troops this year.