Chennai: The Special Investigation Team (SIT) probing the child rape cases against granite businessman Gem Veeramani on Friday thwarted an attempt by his daughter, Archana Veeramani, to fly to Singapore, deboarding her from an IndiGo flight after she had cleared immigration and boarded the aircraft.Archana had boarded the IndiGo flight scheduled to depart at 2.20pm when the SIT team reached Chennai airport and alerted the airport authorities. The SIT team subsequently deboarded her from the aircraft, which departed for Singapore at 2.32pm.After a brief interrogation at the airport, the SIT made her board a police vehicle. The development comes amid an expanding investigation into allegations of sexual offences against minor girls by Veeramani, chairperson of Gem Granites. Police have registered seven Pocso cases against him, with an 11th survivor reportedly coming forward recently.The SIT is also investigating alleged attempts to shield Veeramani and examining financial transactions linked to the cases. Several of his associates have been arrested as part of the probe.