The Delhi High Court has told the Centre it has to produce fresh evidence of the Students' Islamic Movement of India's (SIMI) link to "bomb blasts, riots and destructive activities" to extend its ban. A tribunal, constituted under the Unlawful Activities Prevention Tribunal, is hearing an appeal filed by SIMI against a February 2008 home ministry notification declaring it an unlawful body involved in activities threatening the country's security. Tribunal presiding officer Justice Gital Mittal has asked the Centre why specific reasons or activities were not set out in the latest notification.-Hindustan Times