At least 22 people were killed and dozens injured after a bomb targeted a bus carrying Presidential Guards in Tunis near the French embassy on Tuesday.
Earlier, Reuters reported that eleven persons had been killed.
According to The Guardian, the explosion took place on avenue Habib Bourguiba, close to the French embassy.
Photos released on social media showed the mangled remains of the bus in flames near Mohamed V Avenue, which is one of the main roads in Tunis. It is not clear if the causalties include civilians as well.
BREAKING: At least 11 people killed in attack on Tunisian military bus in Tunis: presidential source
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No terror group immediately took responsibility for the blast. Tunisia, however, in the past has been targeted by Islamic State (Isis).
In June, the Isis terrorists carried out an attack on two hotels in Sousse that left 38 foreign tourists dead.
According to local reports, the "powerful" explosion took place at around 5 pm (local time).
At least 11 people are said to have been injured in the blast, Tunisian national television Vatanje reported.
More details awaited.
