Speaker of the Niger State Assembly Abdulmalik Sarkin-Daji announced the mass wedding last week but called off the ceremony following widespread outrage.
Minister of Women Affairs Uju Kennedy-Ohanenye, speaking to journalists in Abuja on Tuesday, condemned the plans.
Kennedy-Ohanenye said she had petitioned the police and filed a lawsuit to stop the marriages pending an investigation to ascertain the age of the orphans and whether they consented to the marriages.
"This is totally unacceptable by the Federal Ministry of Women Affairs and by the government” of Nigeria, she said.
Last week, Sarkin-Daji announced his support for the mass wedding of the orphans, whose relatives were killed during attacks by armed bandits. He said it was part of his support to his constituents following an appeal for wedding funding by local traditional and religious leaders.
The mass wedding had been scheduled for May 24.
"That support I intend to give for the marriage of those orphans, I'm withdrawing it,” he said. “The parents can have the support [money], if they wish, let them go ahead and marry them off. As it is right now, I'm not threatened by the action of the minister."
Despite national laws prohibiting it, forced or arranged marriage is a common phenomenon in Nigeria, especially among rural communities in the predominantly Muslim north, where religious and cultural norms such as polygamy favor the practice.
Poor families often use forced marriage to ease financial pressure, and the European Union Agency for Asylum says girls who refuse could face repercussions such as neglect, ostracism, physical assault and rape.
Raquel Kasham Daniel escaped being married off as a teenager when her father died and now runs a nonprofit helping children, especially less-privileged girls, get a formal education for free.
She said the ability of women to avoid forced marriage in Nigeria depends on their income and education.
"I was 16 when I lost my dad and I was almost married off, but then I ran away from home. And that gave me the opportunity to complete my education, and now I have a better life,” Daniel said.
“So, the reason why I prioritize education is to make sure that other girls have access to quality schooling so that it will help them make informed decisions about their lives. Education not only increases our awareness as girls about our rights but also enhances our prospects for higher income earning,” she said.
Thirty percent of girls in Nigeria are married before they turn 18, according to Girls Not Brides, a global network of more than 1,400 civil society groups working to end child marriage.
