The US State Department has reported indications that a toxic industrial chemical, probably chlorine, was used in the Syrian town of Kfar Zeita this month.
"We have indications of the use of a toxic industrial chemical" US spokeswoman Jen Psaki said, referring to the rebel-held area in the central province of Hama.
Psaki said the United States was still trying to determine the facts and that "there needs to be an investigation of what's happened here."
More top news
Two cranes have collapsed during a bridge building operation onto housing in Holland, seriously injuring at least 20 people, reports say.
About 130,000 litres of fake vodka have been seized from an illegal booze factory, the tax office said.
A phone box in Birmingham has been converted into what is said to be the city's smallest coffee shop.