In a fresh twist in the Indrani Mukerjea hospitalisation episode, a probe by IG (Prison) has rejected the possibility of drug overdose, poisoning or suicide bid even as a two-member CBI team on Saturday grilled her for nearly six hours in her daughter Sheena Bora murder case. “There was no overdose, nor any poison. Her condition could have worsened as she had briefly stopped taking medicines and was suffering from weakness,” said Inspector General of Prisons Bipin Kumar Singh, adding that Indrani, the prime accused in Sheena murder case, had a history of fainting. “I have come to the conclusion that there is no evidence of foul play, sabotage or conspiracy. Also, there is no evidence of <g data-gr-id="9">attempt</g> to commit suicide,” he said at a press meet at Byculla jail here.