In what the Special Protection Group (SPG) saw as a major breach of security, black balloons were released into the flight path of Prime Minister Narendra Modi's Mi-17 helicopter as he took off from the Vijayawada International Airport (VIA) for Bhimavaram on Monday.

State police, however, denied there was any breach of security but said one Congress worker has been apprehended in this connection, while three other party workers were arrested for trying to enter the airport with black balloons.