Australian mining company Macmahon has confirmed that seven of its workers abducted near its operations in Calabar, Nigeria, have been released.
The seven workers comprised three Australians, a South African, a New Zealander, and two Nigerians.
A gang of around 30 militants attacked a convoy of vehicles on the outskirts of Calabar city, kidnapping the men and also killing the company's driver.
The kidnapped employees were taken by the militants on a boat. Two the workers were seriously injured, the company said.
Macmahon CEO Sy van Dyk said: "Our men have been through a traumatic experience, and we have mobilised medical and other support teams in Nigeria to provide immediate support.
"I also thank the men's families for working so closely with the company during what has been an extremely difficult time for them as well.
"While we are relieved to be able to reunite the seven men with their loved ones, we are deeply saddened by the loss of the local driver Matthew Odok, who was fatally injured during the initial incident."
Macmahon said that the Nigerian authorities have worked with the company throughout the incident.
Following the workers' abduction, Australian, New Zealand and South African authorities and the company's security advisors also supported Macmahon's crisis management team.