Police say there are no clues about the whereabouts of Khushboo Singh, who was seized when she, her husband and their six-month-old son were set to go to a court from the Motihari railway station.

As the husband collapsed, her attackers left presuming he was dead.

Khushboo and Krishna married a year ago in a Bihar court. Both are from Gaunahi village in East Champaran district.

They had come to Motihari for a court case regarding a kidnapping case lodged by her father against Krishna.

"There is no breakthrough in the (case)," police officer Vijay Kumar told IANS over telephone.

Another police official said on the condition of anonymity that Khushboo may have been killed soon after her abduction.

"She may have become a victim of honour killing because she married a Dalit," he said.

The stabbed husband has blamed his wife's family for the crime. According to police, all the accused are absconding.