Special Judge Sangita Dhingra Sehgal relied on the medical reports to reject both the bail applications of the former Samajwadi Party leader who is undergoing treatment for his kidney ailments at the AIIMS.
"The medical reports of the accused were sought from the director of the AIIMS from time to time. As per the report dated September 26, the accused is stable but requires monitoring. I leave it to the good judgment of the specialists and super specialists at the AIIMS to decide the period for which the accused is to be kept under observation.
"The interim bail comes to an end on Wednesday. The regular bail has been declined, vide separate detailed order," the court said. "Let the bail bond submitted at the time of grant of interim bail be canceled and documents be returned to the accused (Singh)," it said.
Singh was arrested on September 6 after he appeared before the court in response to the court summons to him for his alleged involvement in 2008 cash-for-votes scam.
He, however, had to be rushed to the AIIMS from Tihar jail after a bout of vomitting and diarrhoea on September 12 evening and later the court granted him interim bail on September 15.
Meanwhile, Sanjeev Saxena, an accused in 2008 cash-for-vote scam, was on Wednesday refused bail by a Delhi court which said he had "links" with co-accused Amar Singh and played the role of a facilitator in the case.
"From the material available on record, it prima facie appears that the accused (Saxena) had links with Amar Singh and there is grave suspicion that he played a role of a facilitator," Special Judge Sangita Dhingra Sehgal said.
Saxena, a former aide of Amar Singh, is in Tihar Jail under judicial custody following his arrest on July 17 in the case.
The court dismissed the bail plea taking into account that the MPs were allegedly bribed in this case to subvert the constitutional and parliamentary norms.