China's official Xinhua news agency said two Chinese nationals have been killed and a third wounded in a bomb attack in neighboring Laos.
The incident happened Sunday as the trio was traveling in a vehicle in the remote mountainous province of Xaysomboun. Xinhua said one of the victims is an employee of a Chinese mining company.
Officials from China's Embassy in Vientiane visited the survivor in the hospital, and are demanding a swift investigation.
Beijing has become a major diplomatic and economic investor in Laos in recent years, pouring huge sums of money in Laos' abundant natural resources sector. Xinhua said a special envoy of President Xi Jinping is scheduled to visit this week.
Sunday's incident occurred as U.S. Secretary of State John Kerry arrived in Laos on the first stop of a three-nation visit to Asia.
