The men were staff of a construction company handling projects in Borno state.
Gunmen have reportedly shot and killed three Chinese construction workers in Borno State.
The incident, which happened on Saturday afternoon, happened in Gubio Local Government Area, about 89 kilometers from Maiduguri.
The Chinese are said to be staff of a construction company, working on several projects in the state.
Reports indicate that the victims, who regularly visited local markets, were shot as they patronised a Borno State local market.