Ankara: Four rockets were fired at the airport in Turkey's southeastern city of Diyarbakir on Saturday night, Dogan news agency reported. According to Xinhua news agency, the rockets were fired at a police checkpoint outside the VIP lounge at the airport. Windows were damaged and passengers and staff were taken inside the terminal building for safety. According to Diyarbakir governor Huseyin Aksoy, there were neither casualties nor disruption to flights, broadcaster NTV said. The attack is suspected to have been carried out by Kurdistan Workers' Party (PKK) terrorists. Police have launched a large-scale operation to apprehend the terrorists. The PKK is listed as a terrorist organisation by Turkey, the US and the European Union.