SUKKUR   -  An operation to remove encroachments and demolish many illegal structures, including commercial centres, private medical centres, shops, and hotels mostly constructed on occupied lands continued on Tuesday.  Assistant Commissioner (AC) Khairpur Safdar Mirani, along with police, anti-encroachment team and Rangers, had launched a massive operation to remove encroachments from the Mirwah Canal as well as from the Government Servants Colony, including Staff Quarters Colony, Faizabad and other areas.