A rocket exploded at the U.S. Embassy in Afghanistan just minutes into Wednesday, the anniversary of the 9/11 attack on the United States.

A plume of smoke rose over central Kabul shortly after midnight and sirens could be heard. Inside the embassy, employees heard this message over the loudspeaker: “An explosion caused by a rocket has occurred on compound.”

About an hour later the all-clear was given, with no injuries reported. There was no immediate comment from Afghan officials or those with the NATO mission, which is also nearby.

It was the first major attack in the Afghan capital since President Donald Trump abruptly called off U.S.-Taliban talks over the weekend, on the brink of an apparent deal to end America’s longest war.

Read more: Washington Times