26 June, 2017
She would not speculate whether the poisoning might have been intentional.
The wide-scale assault underscored the extremist group's resilience in the city despite months of heavy fighting with Iraqi forces backed by USA air power.
The food was prepared in a restaurant in Irbil and brought to the camp by a Qatari charity, it added.
Thirteen camps have been established by the UNHCR to deal with the flow of the internally displaced people fleeing the city.
The Kurdistan online newspaper Rudaw reported that refugees ate beans, rice, chicken, and a yogurt drink brought in from a restaurant in Erbil for Itftar before the outbreak.
Medics were still treating patients - mostly young children - in a tent on the edge of the camp on Tuesday afternoon.
The UN Refugee Agency UNHCR, said in a statement that around 200 people have been taken to hospital out of 800 cases being registered. He put the number of ill people at 850.
"We are waiting for the police investigations to understand clearly the chain of events and to draw lessons from this tragic incident which will allow agencies to reinforce public health protocols to prevent such situations in the future", it said. According to the United Nations refugee agency, it is home to 6,235 people.
The extremists now only control a handful of neighbourhoods in and around Mosul's Old City, located west of the Tigris River, which divides the wider city into its western and eastern sectors.
Iraq's second largest city was captured by Daesh in June 2014, during their rapid advance into predominantly Sunni northwestern and central Iraq.
Eleven members of the Federal Police were also killed, The Associated Press reported, citing Iraqi army officials.