Soldiers

The troops retreated over the border to "save their own lives", according to a statement by Tajikistan's border guard.

Violence has risen in Afghanistan and the Taliban have been making significant gains, particularly in the north of the country, in recent weeks.

The surge comes as the US, UK and allies withdraw after 20 years.

The vast majority of remaining foreign forces in Afghanistan have left ahead of a September deadline. There are concerns that the Afghan military, who were supposed to take over security in the country, will collapse.

A bullet-holed BMW could be seen where police brought it to a halt.

Earlier, six soldiers were wounded after a car was driven at them near their base in Levallois-Perret.

The Paris prosecutor described the attack as "attempted killings... in relation to a terrorist undertaking".

Reports say one policeman was injured during the arrest operation on the A16 motorway at the town of Marquise near the port of Boulogne.

The BMW is said to have hit at least one other vehicle during the chase and the police opened fire several times. The suspect is in his 30s.