New Delhi: CBI on Thursday told the Delhi High Court that its investigation in the disproportionate assets case against Himachal Pradesh Chief Minister Virbhadra Singh and others has been "held up" due to an order of the Himachal Pradesh High Court, which has put a restraint on his arrest.

The agency told a bench of Justice Pratibha Rani that Himachal Pradesh High Court's interim order of October 1, 2015 restraining CBI from arresting, interrogating or filing a charge sheet against Singh, was hampering their ongoing probe.