Two human rights groups said on Tuesday they had filed a legal complaint in Paris against cement firm Lafarge, saying some of its work in Syria may have made it complicit in financing Islamic State and in war crimes.  A spokeswoman for Lafarge, which became part of the Swiss-based LafargeHolcim Group last year, said it was investigating the complaint and that it did not do business with organizations classified as terrorists...LCS owns a cement factory in Jalabiya in northern Syria, between the IS stronghold of Raqqa and the town of Manbij.  The company repatriated its expatriate staff in 2012 due to fighting in the region, which came under IS control in 2013...The Lafarge spokeswoman would not comment further on the allegations, but said Lafarge had always prioritized the safety of its employees and partners in Syria...