Islamic State militants are suspected of using mustard agent in an attack on Kurdish forces in Iraq, the first suggestion the terror group has obtained a banned chemical weapon.
A senior US official told The Wall Street Journal they had "credible information" that IS had used the blistering agent earlier this week.
It was thought the group could have obtained the weapon in Syria or Iraq.
Mustard agents cause large blisters to form on people's skin and damages eyes, lungs and other internal organs.
Bomb blast at a market in the Iraqi capital leaves at least 60 people dead and 200 wounded, according to police and medics.Read the full story ›
Families of soldiers killed in Iraq have threatened legal action if a publication date for the Chilcot report is not set within a fortnight.Read the full story ›
Jim Atherton worked as a van driver and has no previous military experience, but decided to join the fight against the radical Islamists.Read the full story ›
An independent report claims at least 459 civilians, including more than 100 children, have been killed in Syria and Iraq.Read the full story ›
Tony Blair could be made to stand trial for war crimes over the invasion of Iraq, Labour leadership frontrunner Jeremy Corbyn has said.Read the full story ›
RAF Tornados will continue to carry out air strikes against so-called Islamic State into 2017, the Defence Secretary has announced.Read the full story ›
The United States and allies have targeted Islamic State militants with 22 air strikes in Iraq on Friday and nine in Syria, the Command Joint Task Force said.
Seven of the strikes were near the Iraqi city of Fallujah and hit bridges, a bomb-making facilities and other strategic targets.
Others hit targets near the cities of Al Huwayjah, Bayji, Habbaniyah, Makmur, Mosul, Ramadi, Sinjar and Tel Afar and hit tactical units, weapons and other assets.
In Syria, IS fighting positions, tactical units and equipment were targeted by air strikes near Al Hasakah, Ar Raqqah, Dayr Az and Kobani, a statement from The Command Joint Task Force said.
At least 12 people have been killed in an attack by two suicide bombers on a crowded swimming pool in northern Iraq.
The attacks in the town of Tuz Khurmatu, about 110 miles north of the capital Baghdad, left 45 others wounded.
Most of the victims were Shi'ites from the country's ethnic Turkmen minority.
There was no immediate claim of responsibility, but Islamic State militants have recently launched a string of bombings in Baghdad and other provinces, including a huge attack earlier this month in Diyala province that killed more than 100 people.
At least 20 people are feared to have been killed after a car bomb exploded in the Iraqi capital of Baghdad.
The blast rocked a crowded marketplace in a mainly Shi'ite district in southwestern Baghdad.
Police and medical sources told Reuters another 48 people were wounded by the blast in the Shurta neighbourhood.