The attack took place near the Kimbo river in the Fizi territory of South Kivu province. A Congolese soldier, a driver and two Chinese nationals were killed in the armed robbery.
Three people were seriously wounded, including a Congolese soldier and a worker. The wounded were receiving treatment in a local hospital.
The assailants stole a large quantity of gold from the convoy, which belonged to a Chinese mining company operating in the restive province.
The attack is the latest in a series of violence targeting Chinese mining companies in Congo. In recent months, there have been several attacks on Chinese-owned mines in the country's east.
The Congolese government has condemned the attack and vowed to bring the perpetrators to justice.
The attack comes as Congo is struggling to contain a wave of violence in the east of the country. The region has been plagued by instability for decades, with armed groups fighting for control of the mineral-rich area.
The violence has displaced millions of people and caused widespread suffering.
The Congolese government has been struggling to improve security in the east, but it has been hampered by a lack of resources and a weak military.
The attack on the Chinese mining convoy is a reminder of the challenges facing the Congolese government in its efforts to bring peace to the east of the country.. (ILKHA)