Gannavaram: Police arrested four Congress workers for releasing black balloons near the Vijayawada International Airport after PM Modi's flight took off. It is known that the released black balloons passed nearby chopper which carrying PM Modi and AP CM YS Jagan. SPG took the incident very serious and asked the state government to submit detailed report regarding the incident. SPG asked what if the drones were flied in the place of balloons and considering it as a security breach. However, the police said that the balloons were released fiver minutes after PM's chopper left and four km away from the airport.