Tunisian authorities are putting the capital Tunis under curfew after a bomb attack on a presidential guard bus killed 12 people and injured many others.
It will be imposed until 5am local time (4am GMT) and a state of emergency has also been imposed.
Officials believe the blast was probably caused by a suicide bomber on the bus.
It is the third major attack in Tunisia this year.
Tunisia has declared a state of emergency, giving security forces more powers, in the wake of the bus attack today which claimed at least 14 lives.
At least 14 people are dead and 11 are wounded after a bomb exploded on a bus carrying presidential guards in Tunisia.
The explosion went off as the bus travelled down Mohamed V Avenue in the country's capital Tunis.
Dozens of members of the security forces have been killed by extremists since 2011.
There has been no immediate claim of responsibility for the attack.
Several people are believed to be dead after a bus carrying presidential guards exploded in Tunisia, an interior ministry spokesman said.
Security and presidential sources said the explosion was an attack, adding it was not immediately clear whether it was a bomb or an explosive which was fired at the vehicle.
Ambulances rushed from the scene and security forces quickly sealed off the area.
Tunisia has suffered two major attacks this year targeting its tourism industry.
A gunman killed 38 people in Sousse in June and in March gunmen killed 21 in an attack at the Bardo Museum in Tunis. Islamic State claimed responsibility for both attacks.
An explosion has hit a bus carrying military presidential guards in Tunisia, security sources said.
The cause of the blast in the capital Tunis was not immediately clear, but it is believed there are several casualties.
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