His condition was "quite stable" and doctors were evaluating his health, Ballal said.
Madani, lodged in the Central Prison here since his arrest in August, 2010, was admitted to Soukhya Hospital on January 7 for treatment of diabetes and related eye complication.
The Karnataka high court, while rejecting his bail plea, had in November last year permitted him to avail treatment in a hospital of his choice under police escort.
Madani is among 31 persons chargesheeted in the case relating to the July 2008 bomb blasts that killed one person and left 20 others injured in Bangalore.