France said on Friday it wanted an international investigation to decide whether Sudanese government forces had used chemical weapons in Darfur after allegations in a "worrying" report by Amnesty International, reports Reuters.
The rights group said on Thursday the government has carried out at least 30 likely chemical weapons attacks in the Jebel Marra area of Darfur since January using what two experts concluded was a probable blister agent.
Foreign ministry spokesman Romain Nadal, describing the report as "worrying", said it carried very serious allegations which had to be investigated.
"We think that the report raises questions for the international community and so the relevant institutions should look closely into it and examine the seriousness of the claims to establish the reality," he told reporters.
The rights group estimated that up to 250 people may have died as a result of exposure to the chemical weapons agents.