MUMBAI, JULY 25: Even as the police have not be able to make any breakthrough in killing of Wahid Khan, president of the Bombay Aman Committee, on Thursday night, the crime branch will take over the investigations from the zone-I police, Deputy Commissioner of Police, detection, Sunil Paraskar said on Sunday.Khan was shot dead outside his Crawford Market office by two unidentified men. The police believe the killing to be the handiwork of Chhota Shakeel gang.