Puttapathi: Sai Baba, who was admitted to hospital on March 28, continues to be critical, doctors attending on him said on Tuesday.

"His vital system including liver is showing minimal response to treatment, which is a cause of worry to the treating doctors," a medical bulletin issued this morning by the Sathya Sai Institute of Higher Medical Sciences said.

He continues to be on ventilatory support and his blood pressure continues to show periodic fluctuation which is being corrected by appropriate drugs, it said.

Meanwhile, the Sri Sathya Saibaba Central Trust (SSSCT) has denied media reports of diversion of funds or any other unauthorised expenditure.

In a statement on Monday night, the trust said that all projects and works of the trust were approved by Saibaba only, the founder trustee, who only has the power to sign cheques for disbursing payments for approved works.