The GHMC has continued its drive against coaching centres without fire safety measures on the third consecutive day. On Saturday, the Enforcement teams sealed the institutes at Ameerpet, Suchitra, Alwal, Dilsukhnagar, Tarnaka, ECIL, Secunderabad, Vidyanagar, Padmarao Nagar and Habsiguda. A total of 103 institutions have been sealed on Saturday, which has taken the total to 225 across the city, a press release said.