The brother of Malegaon blast accused Sadhvi Pragya Singh Thakur attempted suicide in south-east Delhi on Wednesday alleging that he was "harassed" by investigating agencies.
Ananth Brahmachari consumed poison and was found unconscious in Jangpura locality on Wednesday afternoon, police sources said.
He was rushed to AIIMS where he is undergoing treatment, they said.
Sources said a note was recovered from him in which he alleged that he was "depressed" due to questioning by the investigating agencies in connection with his sister's alleged association in terrorist acts.
Sadhvi Pragya Singh is accused of orchestrating the Malegaon blast of 2008 and is currently awaiting trial along with others. She is one of the prime accused in the case.