The plea challenging appointment of Justice Virendra Singh, a former judge of Allahabad High Court, as UP Lokayukta was on Monday referred by the Supreme Court to a bench which has been hearing various petitions on the issue. A bench comprising Chief Justice T S Thakur, Justices A K Sikri and R Banumathi said the fresh plea also needed to be heard by the same bench headed by Justice Ranjan Gogoi which had earlier appointed Justice Singh as Lokayukta.