The anonymous caller allegedly claimed that the bomb had been placed in room number 51 - the office of Chief Justice Manjula Chellur's staff, a police official said.
As per the police officials who checked the court premises, their control room received the call at around 10.54 am today.
The bomb disposal squad and the police team arrived at the high court at around 11 am and began checking the entire premises.
Deputy Commissioner of Police, Zone 1, Manoj Kumar Sharma later said the call was a hoax.
An investigation was underway in the matter, he said.
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