MANGALURU: A day after an unattended laptop bag set off a bomb scare at Mangaluru International Airport, police on Tuesday picked up the driver of an auto-rickshaw, in which the suspect allegedly took a ride, and several others for questioning.Police sources said the suspect is an engineering and management graduate and claimed he had earlier been arrested for allegedly making bomb-threat calls to the Bengaluru international airport.A police source claimed the man reportedly visited a salon at an area adjoining the airport, and got a shave done. “Later, he asked the salon owner whether he could keep a bag at his shop, but the owner turned down the request. The auto rickshaw driver, who voluntarily approached police after CCTV footage showed his vehicle near MIA, said the suspect spoke in Tulu,” a police source said.Mangaluru City police commissioner PS Harsha said they are probing whether the suspect was also behind the hoax threat call to an IndiGo flight on Monday, delaying its departure by nearly six hours.