Officials said the chief minister apprised Singh about the incident and the condition of the Lokayukta, P Vishwanatha Shetty.
They added that the home minister wished Justice Shetty a speedy recovery.
Shetty was stabbed multiple times today and left bleeding profusely by a man, who had gone to his office with a complaint, only to be told that the case was shut.
Shetty, in his early 70s, was rushed to a nearby hospital and is stated to be out of danger.
Siddaramaiah, who rushed to the hospital and enquired about Shetty's condition, told reporters that the attacker was placed under arrest.
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