Mohamed V Avenue in Tunis where a bus exploded DrFO.Jr.Tn/Creative Commons
Bloody, for sure. Rather fitting that it happened on "Mohamed V Avenue" I'd say.
Al Qaeda in Islamic Maghreb would be my bet for who did this one.
The story comes from The Independent.
Tunisia bus explosion: At least 11 killed following blast on military vehicle in Tunis
At least 11 people have died after a bus carrying the Tunisian presidential guard exploded on a main road in Tunis.
The blast occurred on Mohamed V Avenue, at the heart of the Tunisian capital, according to a spokesman for the Interior Ministry.
The spokesman had previously said that six people had died, but later updated the death toll.
Security and presidential sources have described the explosion as an attack to the Reuters news agency, and said it was not immediately clear whether it was caused by bomb or an explosive fired at the bus as it travelled along the tree-lined road.
Ambulances have rushed to the scene as security forces secured the area, ITV News reported.
Amid a heightened climate of fear following terror attacks carried out by Isis in Beirut and Paris, the Tunisian authorities increased the security level in the capital ten days ago and deployed security forces in unusually high numbers.
The Tunisian authorities recently announced that they had caught a terror cell it said had planned attacks at police stations and hotels in the seaside city of Sousse, around 150 kilometers (95 miles) southeast of Tunis.
The explosion comes in the same year that Isis gunmen stormed the Bardo museum in Tunis killing 22 people; and a shooter from the extremist group killed 38 people on a beach in Sousse, including 30 Britons.