Turkey's Constitutional Court has voted to ban the country's largest pro-Kurdish party because of alleged links with Kurdish separatist rebels.

Turkey's chief prosecutor Abdurrahman Yalcinkaya argued that the Democratic Society Party (DTP) took orders from the Kurdistan Workers Party (PKK).

The DTP is the latest in a series of pro-Kurdish parties to have been closed down in Turkey.

The EU, which Turkey hopes to join, expressed concern over Friday's ruling.

"While strongly denouncing violence and terrorism, the presidency recalls that the dissolution of political parties is an exceptional measure that should be used with utmost restraint," the EU's Swedish presidency said in a statement.

The 11 judges in Turkey's Constitutional Court ruled that the DTP had become a "focal point of activities against the indivisible unity of the state, the country and the nation", court president Hasim Kilic told reporters.

He said DTP leaders Ahmet Turk and Aysel Tugluk had been stripped of parliamentary immunity and banned from politics for five years along with 35 other party members.