G S Wander, director, Hero DMC Heart Institute, said the RSS leader was on ventilator.
He was examined by a team of senior doctors of PGIMER and DMCH this morning, Wander said.
Meanwhile, an RSS delegation presented a memorandum to Deputy Commissioner Ravi Bhagat demanding immediate arrest of the culprits.
The memorandum which was addressed to Punjab Chief Minister Parkash Singh Badal also demanded that the government deal firmly with the "forces trying to destablise the country."
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Meanwhile in Phagwara, a delegation of RSS, BJP and Shiv Sena presented a memorandum to Additional Deputy Commissioner (ADC) Iqbal Singh Sandhu demanding immediate arrest of the culprits.
The memorandum which was addressed to Punjab Chief Minister Parkash Singh Badal also demanded that the government deal firmly with the "fissiparous forces" trying to create communal divide and confrontation between communities in the state.
The delegation was led by District RSS chief Shiv Handa, and joined by BJP Block President Pankaj Chawla.