Further chaos struck Scotland's fixture list on Friday evening after Portuguese referees brought in to cover for striking Scottish officials returned home.
The Portuguese FA confirmed two referees had set off on Friday morning but Press Association Sport understands they left Scotland soon after arriving.
Portuguese referees had been due to take charge of Hibernian's home clash against St Johnstone on Saturday and the Sunday contest between Motherwell and Hearts.
However, SFA officials are continuing to work on the assumption that all six SPL matches will still go ahead.
Source: PA
