Work on the £30 million high speed broadband service to North Wales could be at risk.
It has emerged that sub contractors on the project are owed money for work that they have already completed.
The project, paid for by the Welsh Assembly, involves laying a cable two hundred miles long from Holyhead on Anglesey to Manchester, connecting industrial areas in Wrexham and Caernarfon along the way.
However sub contractors are not being paid for work already completed, and in some cases firms are owed between £30,000 and £250,000, while some individual contractors are owed sums in the region of £17,000.
Many of the sub contractors are owed money from just one company United Formwork who it would seem are currently unavailable for comment.
The main contractors on the project Geo and North Midlands Construction are investigating this problem.