The posts shared under the hashtags #FethiSekin and #Kahramanimiz (Our Hero) became a trending topic on Twitter since the attack Thursday afternoon.
"Goodbye you brave man, it is our duty to keep your name alive. #FethiSekin," a group named Izmirliyiz wrote on Twitter.
Another Twitter user, Aykut Elmas, shared a photo of Sekin showing him watching a football game of his son at a local stadium after his daily shift ended. "#FethiSekin rest in peace," he tweeted on the photo.
Galatasaray football club -- which Sekin was a fan of -- also shared a statement saying that it would offer an educational scholarship to Sekin's son as well as provide opportunities to him at the football club.
The terrorist attack in Izmir occurred just outside the city's main courthouse when the 43-year-old police officer Sekin stopped a suspicious vehicle, which turned out to be carrying explosives.
Sekin, who realized the terrorists as soon as he stopped the vehicle, opened fire on them and prevented civilian casualties by halting the vehicle from proceeding. An armed clash also took place between the terrorists and the security forces.