"The father and mother are accused under laws against genital mutilation because they are suspected of contributing to the circumcision of five of their six daughters," Hanne Kristin Rohde, a police official told NRK radio.
Only two of the six children who are aged between three and 14 live in Norway, although the others -- who live in West Africa's Gambia, with the man's two other wives -- have Norwegian passports. These include a three-year old who has not yet been circumcised.
Rohde made it clear that Norway's public child protection agency would be entrusted with caring for all the children.
Their father, a 41 year-old whose identity has not been disclosed, is expected to appear before a judge with authorities seeking his detention. Their mother, due to give birth to a seventh child, is said to be too weak to spend time behind bars.
Rohde said Norwegian laws against female genital mutilation carry a prison term of several years depending on the severity of the case.