TUNIS, Aug 27 (Reuters) - Tunisia has declared Ansar al-Sharia a terrorist organisation after obtaining proof it killed two secular politicians and several soldiers, Prime Minister Ali Larayedh said on Tuesday.

"We have discovered proof that the Ansar group is responsible for the assassinations of Chokri Belaid and Mohamed Brahmi and the attacks at Mount Chaambi," he told reporters. (Reporting by Tarek Amara, writing By Tom Heneghan; Editing by Alistair Lyon)

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