New Delhi, July 12: In a joint operation, CBI and the Tamil Nadu police has arrested a key accused in the Madurai Meenakshi Amman temple blast case, CBI said here today. Venkatesh alias Mustafa alias Sheikh Dawood was arrested last week in Delhi and was taken to Madurai after obtaining a transit remand from a Delhi court, a CBI spokesman said. The accused was produced before the chief judicial magistrate, Madurai and was remanded to 15 days judicial custody, he said. Venkatesh, who was arrested immediately after the shocking bomb blast inside the temple premises, had escaped from judicial custody in 1997 while being transported from Vellore central jail to Madurai. Bureau Report