"Police and bomb squad have carried out their search at Wipro campus and found no suspicious object in the vicinity," Bangalore police Commissioner Raghavendra Auradhkar said.
A letter claiming to blow up Wipro's corporate and training block at 11 am on Friday and 1 pm on Saturday with 19 bombs was delivered to Sarjapur police station.
The letter had no mention about the sender, police said.
Wipro said in a statement that "as a matter of routine, a security check was undertaken at Wipro's Sarjapur campus. Our operations continue to be business as usual."
This is the second time in nearly two weeks that such a letter threatening terror strikes have been sent to the police. The police are ascertaining if there is a pattern involved.