An FIR filed against Sushant Singh Rajput's sisters by actor Rhea Chakraborty is "vitiated and bad in law", the CBI said today, opposing it in the Bombay High Court. The allegations against the actor's sisters in the FIR registered on the basis of Rhea Chakraborty's complaint are "presumptive and speculative", the CBI argued. These allegations could have been part of the ongoing investigation, said the investigating agency. The agency said if Mumbai Police or Rhea Chakraborty had to provide any information on the death of Sushant Singh Rajput, it should have been directly shared with the CBI for action; the FIR registered at the Bandra police station was not required.