A CBI investigating officer in the Aarushi-Hemraj double murder indicated in a Ghaziabad court Thursday that plywood on walls and wooden floors in Aarushi's room could have prevented any noise from going out at the time of her killing, a lawyer said. The probe agency's superintendent A.G.L. Kaul, during his cross-examination before Central Bureau of Investigation (CBI) Special Judge S. Lal, was asked if during investigation they could find any reason why Aarushi's dentist parents allegedly did not get alerted when she was murdered in another room in their Noida house. Kaul admitted that the partition wall of Aarushi's room was made of bricks and it was laminated with plywood and the flooring was also wooden. http://twocircles.net/2013apr18/wooden_wall_may_have_muffled_noise_aarushis_room_court_told.html