BAGHDAD — The Islamic State launched two chemical attacks near the northern Iraqi city of Kirkuk, killing a 3-year-old girl, injuring some 600 people and causing hundreds more to flee, Iraqi officials said Saturday.

“What the Daesh terrorist gangs did in the city of Taza will not go unpunished,” Iraqi Prime Minister Haider al-Abadi said, using an alternative acronym for the IS group during a meeting with village elders in Taza on Saturday. “The perpetrators will pay dearly.”

Islamic State is also known as ISIS or ISIL.

Security and hospital officials say the latest attack took place early Saturday in Taza, which was also struck by a barrage of rockets carrying chemicals three days earlier.

Sameer Wais, whose daughter Fatima was killed in the attack, is a member of a Shiite militia fighting the Islamic State in Kirkuk province. He said he was on duty at the frontline when the attack occurred early in the morning, quickly ran home and said he could still smell the chemicals in the rocket.

“We took her to the clinic and they said that she needed to go to a hospital in Kirkuk. And that’s what we did, we brought her here to the hospital in Kirkuk,” he said.

Wais said his daughter appeared to be doing better the next day, so they took her home. “But by midnight she started to get worse. Her face puffed up and her eyes bulged. Then she turned black and pieces of her skin started to come off,” he said.

By the next morning, Fatima had died, Wais said.

The hundreds of wounded are suffering from infected burns, suffocation and dehydration, said Helmi Hamdi, a nurse at the Taza hospital. He said eight people were transferred to Baghdad for treatment.

“There is fear and panic among the women and children,” said Adel Hussein, a local official in Taza. “They’re calling for the central government to save them.”

Hussein said a German and an American forensics team arrived in the area to test for the presence of chemical agents.

U.S. and Iraqi officials said U.S. special forces captured the head of the Islamic State unit trying to develop chemical weapons in a raid last month in northern Iraq.

The U.S.-led coalition said the chemicals the Islamic State has so far used include chlorine and a low-grade sulfur mustard which is not very potent. “It’s a legitimate threat. It’s not a high threat. We’re not, frankly, losing too much sleep over it,” U.S. Army Col. Steve Warren told reporters Friday.

Experts also say the extremist group appears incapable of launching a large-scale chemical weapons attack, which requires not only expertise, but also the proper equipment, materials and a supply chain to produce enough of the chemical agent to pose a significant threat.

The coalition began targeting the Islamic State’s chemical weapons infrastructure with airstrikes and special operations raids two months ago, Iraqi intelligence officials and a Western security official in Baghdad said.