Story By: Feza Uzay, Sub-Editor: Marija Stojkoska, Agency:  Newsflash

This is the moment when a disgruntled employee storms into a restaurant and shoots his boss dead.

The boss – former motorcycle drag racing champion Mustafa Adim, 43 – had earlier humiliated 36-year-old waiter Yusuf Sivridag in front of customers.

The shooting took place at a restaurant in Meram in the southwest-central Turkish province of Konya at around 6.30am on 21st May.

Security camera footage shows the moment suspect Sivridag bursts into the restaurant and fires three shots at boss Adim.

A visibly injured Adim, who had been eating with his friends, is seen running out of the establishment, chased by Sivridag.

The gunman then returns to the restaurant and threatens another person while still wielding his handgun.

Cops seized him shortly after the killing and he is now being held without bail.

Adim was taken by friends to a nearby private hospital but died of gunshot wounds.

Sivridag worked as a waiter at an arcade managed by Adim, who won the Turkey Moto Drag Championship in 2014.

Footage from a few days before the shooting seems to show Adim manhandling Sivridag and apparently humiliating him in front of others.

At one point, he can even be seen kicking his employee in the face.

It has been speculated that Sivridag may have shot Adim in revenge for this incident.

However, the police have not revealed the suspected motive at this stage.

The investigation is ongoing.