Nigerian police say they have rescued six pregnant girls from child traffickers who were planning to sell their babies.



Two men and a woman have been arrested in the case, which is the second so-called baby factory to be uncovered in a week.



Last week, at least 23 girls and four babies were found in Umuaka, in eastern Nigeria's Imo State.



Al Jazeera's Yvonne Ndege reports from Umuaka.