The Taliban claimed responsibility for the suicide bombing in Bagram, Afghanistan on Twitter
Credit: Massoud Hossaini/AP

Six American soldiers have been killed and three more wounded in a suicide bombing in Afghanistan today.

It is the deadliest attack on international troops in the country this year, the Wall Street Journal reports.

A suicide bomber drove a motorcycle into a joint convoy of NATO and Afghan forces, killing six U.S. service members, wounding two others and also injuring an interpreter, a U.S. official told NBC News. The Taliban has claimed responsibility for the attack on Twitter.

“Six Resolute Support service members died as a result of a vehicle-borne improvised explosive device attack in Bagram, Afghanistan on December 21 at approximately 1:30 p.m,” said a statement from NATO Resolute Support, according to ABC News. “Additionally, three Resolute Support members were injured in the attack.”

The attack occurred around 1:30 p.m. local time near Bagram, the largest U.S. military base in Afghanistan – just outside the capital Kabul.

“We’re deeply saddened by this loss,” Brig. Gen. Wilson Shoffner said in a statement, according to CNN. “Our heartfelt sympathies go out to the families and friends of those affected in this tragic incident, especially during this holiday season.”

The names of those killed have not been released. The attack remains under investigation, a NATO spokesman told CNN.