New Delhi, Aug 14 (ANI): An 18-year-old girl and her 8-year-old brother were found murdered in their bedroom in north east Delhi_s Karawal Nagar on Thursday. The two used to stay with their aunt who discovered the bodies when she came in to the bedroom to wake them up for school. A PCR call was made around 6:30 AM. The siblings had injury marks from a sharp object around their necks. The girl_s limbs were also found tied. Police haven_t ruled out a case of sexual assault on the girl. Investigations are on and both the bodies have been sent for post mortem.