A mentally unsound man was detained by the Delhi Police on Saturday after he tried to forcibly enter the Kerala House at Jantar Mantar, police said.
The incident was reported at around 10 am when the chief minister was heading for the CPM politburo meeting.
"The incident occurred at around 10 am after which the security staff informed the police about it. The man was later identified as a 46-year-old Vimal Raj, a native of Kerala's Karippuzha," Deputy Commissioner of Police Madhur Verma said.
"The medical documents he was carrying have suggested that he is 80 per cent mentally unsound. He is now being sent to the Institute of Human Behaviour and Allied Sciences (IBHAS), Shahdara as per the law," he added.