Syria has suddenly revealed on the eve of potential airstrikes in its country against ISIS that it has another chemical weapons laboratory.

The lab was built specifically to produce the deadly chemical ricin for chemical weapons.

Three sources told Reuters that the Syrian government admitted the location of three new facilities to the Organization for the Prohibition of Chemical Weapons.  The revelation of the plants backs up claims from world leaders that Syria was not completely honest with OPCW and the UN regarding their chemical weapons stash and abilities.

Damascus had agreed last year to eliminate its chemical weapons program following world condemnation for an attack on Ghouta where hundreds were killed by sarin gas.

The OPCW described the incident as a “discrepancy” in the initial declaration by Syria to the organization.  Syria claims that they could never let inspectors in because of fighting between rebels and government troops.

Syria had blamed sarin attacks on rebel forces and said they never had the capability to produce the rockets needed for the weapons.

“Syria will argue that the facilities were not revealed earlier because they were in a rush when they first had to report them,” said one diplomatic source. “They had said the ricin was for medical purposes, but we don’t believe that’s true.”

The OPCW is also investigating a report that Syrian government troops have dropped chlorine “barrel” bombs this year.