Four soldiers were killed when NATO's International Security Assistance Force (ISAF) plane crashed in Afghanistan on Saturday, according to a coalition statement cited by SKY News.
The identities of the victims were not released, said the Associated Press.
The accident came as the Taliban announced the start of their spring offensive targeting foreign and Afghan security forces there. Violence has already started: three police officers were killed in a Sunday blast in Ghanzi province claimed by extremists.
More from GlobalPost: Ghanzi bombing: At least 3 killed in Afghanistan
A local police chief in Afghanistan's Zabul area, Rogh Lewanai, told SKY the plane had landed Saturday in rough weather.
NATO is looking into it. "The cause of the crash is under investigation, however initial reporting indicates there was no enemy activity in the area at the time of the crash," the coalition said, reported SKY.
April has been the deadliest month for security forces in Afghanistan so far this year, according to AP.