The Syrian opposition has yet to decide whether it will commit to a U.S.-Russian plan to stop fighting in Syria on Saturday, chief opposition negotiator Mohamad Alloush told Orient News on Wednesday.

Alloush said the opposition High Negotiations Committee, which he is a member of, would give the final answer.

Alloush heads the political office of the Jaish al-Islam rebel group, one of the biggest insurgent factions.