An international federation of labor unions said on Tuesday that FIFA denied it access to the Azteca Stadium to inspect conditions of construction workers doing renovations ahead of the 2026 World Cup.

Ambet Yuson, the general secretary of the Building and Wood Workers’ International, said FIFA told them that they didn’t need inspections because the local workers already have a union and that there have been no incidents so far.

The Building and Wood Workers’ Union (BWI) says its representatives were denied access to Mexico’s Estadio Azteca for a pre-arranged visit.