The opening ceremony for the Paris Olympics is facing the risk of being disrupted.

This as negotiations to end a strike threat from several hundred dancers involved in the ceremony failed to reach an agreement.

The SFA-CGT union, which says it represents roughly 10 percent of the 3,000 performers involved in the opening ceremony, filed a strike notice last week over what it said were “outrageous disparities” in pay between dancers.

A meeting between the union and the organising committee for the games resulted in an offer of 120 euros extra for the lowest paid performers, which was rejected.

The opening ceremony is set to take place over a six-kilometre stretch of the River SEN, with around 6000 to 7,000 athletes expected to sail down the river on 85 boats.

It will be the first time a Summer Olympics has opened outside of the main athletics stadium.