"The investigation team will fly to Bengaluru in the afternoon to take Rao into our custody and bring him to Mangaluru for interrogation and investigation," Harsha tweeted

"Rao was taken to a state-run hospital for check-up and will be produced in a local court for his transit custody and interrogation by the Mangaluru police," the Bengaluru official said.

Karnataka Home Minister Basavraj Bommai told reporters here that the suspect was arrested by the Halasuru Gate police station circle inspector after he surrendered to state DGP-IG (Inspector General) Neelamani Raju at her office near the station.

"The suspect seems to have admitted to have left a bag containing some bomb-making material at the outside counter of an airline (Indigo) office in the Mangaluru airport," Bommai said.