IS claims deadly Tunisia bus bombing

TUNIS - The Islamic State group on Wednesday claimed the bombing of a presidential guard bus in the Tunisian capital that killed at least 12 people.

A Tunisian suicide bomber named "Abou Abdallah al-Tounissi" boarded the bus in central Tunis on Tuesday and blew himself up, it said in a statement shared on jihadist social media accounts.

IS published a photo of the attacker dressed in white and wearing an explosives vest, his head and face covered with a scarf.

The jihadist group said 20 people had been killed, while an earlier official toll said 12 presidential guards died in the attack.

Tunisian President Beji Caid Essebsi (L) decorates members from the presidential guards who were killed in a bomb blast on a bus in central Tunis the previous day during an official ceremony to honour them at Carthage Palace in the Tunisian capital on November 25, 2015. The Islamic State group claimed the deadly bombing of a presidential guard bus in the Tunisian capital in a statement shared on jihadist social media accounts. AFP PHOTO / FETHI BELAID / AFP / FETHI BELAID

The remains of a 13th person found at the scene -- who authorities believe could have been the bomber -- have not yet been identified, the interior ministry said.

The bombing was carried out using 10 kilos of powerful Semtex explosive, according to the ministry.