A man has been arrested after his single punch led to the death of another driver following a heated argument in Istanbul traffic.The 32-year-old driver attacked 45-year-old Şenol Ünlü on Aug. 30 when his car was hit in the busy traffic of the central neighborhood of Şişli. The victim instantly fell down with the punch of the infuriated driver.Ünlü died at a hospital on Aug. 31, while the assailant was detained the next day.Doğan News Agency obtained the following footage of the incident on Sept. 5: