General John de Chastelain has met senior members of the UDA in Belfast.
The head of the Independent Commission on Decommissioning was accompanied by his two fellow commissioners, Andrew Sens and Tauno Nieminen, for the meeting at an undisclosed location in the city.
A spokesman for General de Chastelain said there is an ongoing engagement with the loyalist group.
Loyalist sources described the meeting as significant but said more work was needed before anything would be seen.
It was the first meeting of the UDA and Commission since the IRA completed its decommissioning process.