Witnesses in the Jabra neighbourhood told Reuters they saw security forces exchange gunfire with a group inside a residential building and close the main road in the area. State TV described the group as being a terrorist cell.
On Tuesday, five members of the General Intelligence Service were killed and a sixth injured following a raid where 11 suspects of different nationalities were arrested, the service said.
Four foreigners were still being pursued, it said, following the raid on locations in Jabra and elsewhere in the capital.