The Kerala police on Sunday took into custody three migrant labourers in connection with the abduction and alleged sexual assault of an eight-year-old girl who was found abandoned in a paddy field near Aluva.

Police said their role was being investigated. A senior police official said they will seek custody of the prime accused Krystal Raj, 27, who was caught on Thursday near Aluva in Ernakulam district where he was hiding and drinking alcohol.