At least 385 people have been killed in the fighting between the Al Qaeda-linked Islamic State of Iraq and the Levant and other rebel groups in northern Syria over the past five days, the opposition Syrian Observatory for Human Rights said Wednesday.

The casualty figures cover the period from dawn Friday to midnight Tuesday, the London-based group, which has a large network of activists on the ground across Syria, said.

The fighting has pitted radical Islamists against other insurgent groups in Syria's Aleppo, Idlib, Al-Raqqah and Hama provinces.

At least 56 civilians, including nine executed by the Islamic State of Iraq and the Levant, have died in the fighting.

The Islamist groups have lost 198 fighters in clashes and attacks staged using car bombs.

The Islamic State of Iraq and the Levant has lost 131 fighters, with 131 men killed in combat and 47 executed by the rebels after being taken prisoner in the Jabal Zawiya region of Idlib, the observatory said.

The Islamic radicals have killed scores of civilians and captured insurgents, but exact figures are not yet available, the human rights group said.

Two Swedish journalists kidnapped in Syria on Nov. 23 have been released, the Swedish government said Wednesday.

Reporter Magnus Falkenhed and photographer Niclas Hammarström are in Beirut, where they are being assisted by diplomats, the Swedish Foreign Ministry said. EFE