Security personnel intercepted a man with a rusted knife after he arrived to submit a petition at the residence of the Karnataka Chief Minister Siddaramaiah at Kumara Krupa, in Bengaluru on Monday morning.

The incident took place around 10 am when the man, later identified as Lingaraju (54), from Mysuru arrived at the residence.

During regular frisking, the weapon was unearthed and the man was immediately detained.

He was taken to the High Grounds police station. During questioning it was revealed that Lingaraju hailed from Rasipura area and has a history of mental illness.

He even told police that a helicopter had dropped him to the CMs residence. Further probe is underway and investigators have got in touch with the Mysuru police for additional information on Lingaraju.