A Kosovo prosecutor has charged two ethnic Albanians with terror offenses for allegedly joining an Islamic group in Syria.

A statement by the prosecutor's office Friday said the two left Pristina in November 2013 to go to Istanbul, Turkey, and then to the border city of Hatay before crossing into Azaz city in Syria where they were trained and armed by the Nusra Front rebel group.

They are believed to have taken part in fighting until they returned to Kosovo three months later.

It wasn't clear if they have been arrested.

If proved, the charges could lead to up to 10 years imprisonment.

Authorities say that some 70 Kosovo citizens are believed to be active in Syria and Iraq.