A father who brought his children from Delhi has handed them over to their mother with the intervention of the police. This incident highlights a domestic dispute involving child custody. Further details regarding the specific reasons for the father bringing the children from Delhi and the circumstances leading to police intervention were not provided in the original summary. The police's role appears to have been facilitative, ensuring the children were reunited with their mother. This situation often arises in cases of marital discord or separation where parents may have differing views on custody or visitation rights. Such incidents underscore the importance of legal processes and mediation in resolving family disputes, especially those involving the well-being of children. The exact location in Bihar where this handover took place is also not specified.