Professor Peter Breunig and his co-worker, Johannes Behringer are German archaeologists who were kidnapped while working at a dig site in northern Nigeria on Wednesday morning.

They were working with Nigeria's National Commission for Museums and Monuments, looking into ancient Nok culture.

A source at the German foreign ministry says they have now been released and are doing well.

"The two archaeologists from the Goethe University in Frankfurt are free. They are in the care of the German embassy in Abuja," the official told AFP.

"They are doing well under the circumstances," the source added, without providing further details.

The kidnapping took place off the main road linking the Kaduna airport with the FCT, Abuja.

Breunig and Behringer were not alone when abducted but surprisingly the gunmen did not take the two female members of the archaeological team with them.

Unfortunately, two locals lost their lives while trying to stop the kidnappers fired shots into the air to scare off the villagers.

It was also a strange that the security men attached to the Germans did not accompany them to the dig site on the day they were kidnapped.

As usual, the police claims that the pressure it mounted on the kidnappers forced them to release the Germans.

"The kidnappers released them after we mounted pressure on them.

"I'm not aware any ransom was paid and there has been no arrest of any of the people involved in the abduction. But we are trailing them," said the Kaduna state police spokesman Usman Aliya.