A mentally unsound man was detained by the Delhi Police on Saturday after he tried to forcibly enter the Kerala House here at Jantar Mantar, police said.

"The incident occurred at around 10 a.m. 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.