The medical charity Doctors Without Borders says five of its workers have been freed after months of captivity in Syria.
The group, known by its French initials MSF, announced Thursday that two of the captive aid workers were freed Wednesday. The other three were freed last month.
Doctors Without Borders closed one of its hospitals and two medical centers in northwest Syria after the workers were abducted in January.
Earlier Thursday, U.S. Secretary of State John Kerry said he has seen raw data that suggests the Syrian military has used chlorine in gas attacks on civilian areas and militants. Kerry said he has seen the information, but that it has not yet been verified.
On Tuesday, French Foreign Minister Laurent Fabius said the Syrian government is believed to have used chemical weapons, including chlorine, in 14 attacks in recent months.