France’s highest court ruled on Tuesday that cement maker Lafarge could be held liable for complicity in crimes against humanity in Syria.

The company previously acknowledged that it paid nearly €13 million ($14.2 million) to middlemen to keep its Syrian cement factory running in 2013 and 2014, long after other French firms had pulled out of the country.

Lafarge was being investigated in France until an appeal was lodged by its Swiss parent company, Holcim.

The ruling on Tuesday was a procedural hearing that upheld a decision by a lower court to throw out this appeal.

It now clears the way for a multi-year investigation into the company’s activity in Syria can continue.

In the US, Lafarge pleaded guilty to charges that it paid millions to the so-called “Islamic State” group and Nusra Front.