A man has been jailed after killing an ex-Royal Marine during a hit-and-run on the A303 in Wiltshire.

Tarkan Agca pleaded guilty to manslaughter after he deliberately drove his BMW into Andrzej Szaruta on an A303 exit slip-road in June earlier this year.

Agca, 24, had been tailgating Mr Szaruta - who was known an Andy - for some time before they both pulled over at the exit for Solstice Park, near Amesbury.

But as Mr Szaruta, who had been driving his wife and daughter from their home in Bridgwater to see his son in London, exited his vehicle, Agca accelerated.

Agca and Mr Szaruta both pulled over on the A303 exit slip-road for Solstice Park. Credit: Wiltshire Police

The labourer, from Watford, struck the 63-year-old and then quickly drove off - leaving Mr Szaruta with fatal injuries.

He was later flown to hospital but sadly died two days later, while Agca was arrested in Watford the following day.

During an interview with Wiltshire Police, the defendant denied being involved in the collision - suggesting he didn’t know where the A303 was or own a car.

Agca during his police interview. Credit: Wiltshire Police

Agca pleaded guilty to manslaughter today (Dec 3) at the start of his trial at Winchester Crown Court.

Prior to sentencing, the court heard the defendant had a number of previous convictions relating to "road rage" type incidents - including some instances of inconsiderate or dangerous driving followed by aggressive or violent outbursts.

Agca returning to his home in Watford following the fatal collision. Credit: Wiltshire Police

This was an appalling crime where Mr Szaruta suffered ultimately fatal injuries in front of his horrified wife and daughter. Agca inflicted a cowardly assault on Mr Szaruta, with no justification whatsoever. Agca then fled the scene with no regard or concern for how seriously injured his victim was and, until recently, had not accepted any responsibility for what happened. I would like to extend my sincere condolences to the family of Mr Szaruta – I know how devastated his wife Susan and grown-up children Christian and Rachel have been following his death. >

Detective Chief Inspector Darren Hannant, from the Brunel Major Crime Investigation Team

Mr Szaruta described the former Royal Marine as a “loyal husband and loving father”.

Agca will be sentenced on January 10.