Police has said that Mian Channu blast accused Master Riazs link with Baitullah Mehsud has been proved but there was no evidence about his connection with alQaeda. Arif Ikram, Regional Police Officer Multan Range, has said that Master Riaz has been trained in suicide jacket making and planting landmines. Jihadi literature, CDs, mobile SIMs and sensitive documents were also captured from the possession of the accused, the regional police chief said. On the indication of the accused 33 persons have been detained for investigation, he added. According to sources, two persons Shaukat and Nasir have been arrested on the clue given by the arrested accused.