Srinagar Airport has become operational for commercial flights from today. The airport was closed for the flights on the second of this month for renovation and up gradation of the runway.The flights which were operated from Awantipura Airbase from the second of this month were suspended three days ago owing to law and order problems. The main Srinagar Airport was closed for renovation and repair of runway and after the completion of the work, flights from the main Srinagar Airport have resumed today. Air tickets of the passengers are treated as curfew pass.The situation in Kashmir continues to be tense but under control as indefinite curfew continues in the entire valley for the fourth consecutive day. There have been clashes and violation of curfew in Berwara area of Badgam district where four civilians were injured in firing by security forces. An official spokesman has said that the people resorted to stone pelting on security men and forces had to open fire injuring four persons. Some people also tried to defy curfew in Tangmarg area of Baramulla district.