The US military has banned all troops stationed in Japan from drinking alcohol, following a deadly crash on Okinawa island linked to drink driving, BBC reports.
In addition, soldiers on Okinawa are banned from leaving their base and their residences, the US military said.
On Sunday, a US soldier crashed his truck into a mini van, killing the local driver of the other vehicle.
Okinawa hosts more than half of the US' troops in Japan but locals have long resented the heavy military presence.
In a statement, the US military confirmed that one its service members was involved in the accident and said that "alcohol may have been a factor".
The military also announced "mandatory training to address responsible alcohol use, risk management and acceptable behaviour" for all its troops across Japan.