Gunmen attacked the Tunisian parliament and a nearby museum on Wednesday amid reports of hostage taking, prompting large police deployment, Al Arabia reported.
The TAP state news agency said police had exchanged gunfire with the gunmen at the parliament building.
The gunfire erupted while the parliament was in session, Al Arabiya News Channel reported, prompting parliamentary committees to suspend their meetings.
Lawmakers were ordered to assemble in the main chamber, Islamist MP Monia Brahim told AFP.
Reuters quoted a government official as saying that Tunisia security forces were surrounding two militants inside the Bardo Museum parliament grounds.
Witnesses said a large police presence was moving to evacuate the parliament building and anti-terror units were being deployed as well to the scene.