Gunmen have killed four policeman in Tunisia in an attack on the home of a government minister, officials say.
The interior ministry said Lotfi Ben Jeddou was not at his home during the attack in the western Kasserine region.
It is unclear who was behind the attack but correspondents say Tunisia's military have been fighting Islamist militants for several years.
"Four police officers were killed and another injured during a terrorist attack with Kalashnikov rifles that targeted the home of the interior minister," a spokesman told the AFP news agency.
One local resident said the gunmen were wearing balaclavas and arrived on a pick-up truck.
In February, gunmen in western Tunisia killed four people, including two police, after setting up a roadblock and shooting at cars.
Tunisia's armed forces launched a major assault last year in the Chaambi mountains close to the border with Algeria, where Islamist militants had set up camp.
Correspondents say authorities are also concerned about the conflict in Libya, where Islamist militants control large parts of the country, spilling across the border.