Two sisters, Sobia, 25, and Hira, 20, were allegedly shot dead by their brother, Rehan, inside their home in New Rehmanabad, Drigh Road, under Shah Faisal Colony police jurisdiction, Karachi, on Wednesday. Korangi SSP Fida Husain Janwari said initial investigation suggested the suspect had warned his sisters against using TikTok, which appeared to be a possible motive. He said the suspect fled the crime scene and efforts were on to arrest him. He added that the suspect had a criminal record and had been arrested multiple times. The bodies were shifted to the Jinnah Postgraduate Medical Centre for medico-legal formalities.