A man was gunned down outside his father's top-rated restaurant after they refused to hand over £100,000 to a Turkish gang, a court has heard. 

Beytullah Gunduz, 39, is accused of plotting to kill Onur Guzel, 38, who was shot as he spoke to his wife on the phone outside Umut 2000 in Dalston, east London, on June 20 last year. 

CCTV footage captured the victim screaming loudly as he lay slumped on the pavement after being struck by a single bullet to the torso.

Gunduz, an alleged member of the Hackney Turks, is said to have accused Mr Guzel's family of paying money to rival gang, the Tottenham Turks.

Prosecutor Jane Bickerstaff KC said Gunduz and his associates had demanded the 'eye-watering' £100,000 sum weeks before the shooting. 

Gunduz denies conspiracy to murder and is currently on trial at the Old Bailey, where he also faces an alternative count of conspiracy to cause grievous bodily harm.

The court heard that the shooter, Dogan Over, who fired the shot from behind the wheel of a Kia Niro, fled to Istanbul on June 25 and has never returned.

Gunduz was not in the car during the shooting but is alleged to have been in the area, assisting Over. 

Ms Bickerstaff told the court today: 'Mr Guzel was taking a break from his shift. He was on the phone to his wife.

'CCTV shows that at 10.50pm a white Kia Niro pulled into the queue of traffic but held back slightly.

'CCTV shows that the lights must have changed as the traffic ahead moved off. The Kia pulls forward until it is adjacent to that open doorway.

'The driver pointed his arm out of the lowered passenger window and discharged a single shot directly at Onur Guzel.

'That shot went directly into his torso. He survived his injuries, although he suffers serious, lasting effects.

'The bullet, discharged at such close range, passed right through him into that doorway.

'He sustained serious injuries including wounds to his left lower abdomen, the left side of his back, his bowels, which required emergency surgery at the Royal London Hospital.'

A colleague put pressure on Mr Guzel's wound and the emergency services were called. He spent four weeks in hospital and now lives with a stoma bag. 

In hospital, Mr Guzel told police he did not see anyone point a gun at him but heard a loud bang and 'immediately felt heat'.

He told police there had been two previous incidents linked to his family and their restaurant, including shots being fired at the home where his brother lived in Enfield on April 5 last year. 

Two days later shots were fired at the restaurant while it was closed for the night.

'Mr Guzel described a Turkish male known as Beyto, and his associate known as Mus,' said Ms Bickerstaff.

'He believed that Beyto was short for Beytullah. He described Beyto as a white Turkish male, of about 35 to 40 years, with a cut on his face.

'Mr Guzel believed that Beyto was part of a group of Hackney Boys known as the "Bombs".

'You will hear evidence from a police officer with expert knowledge about gangs who will tell you of two rival Organised Crime Groups operating in this area, the Tottenham Turks and the Hackney Turks, known as the Bombacilar, which means "the bombers".

'Mr Guzel told police that following these two previous shootings he had met this man Beyto three times. 

'He had also seen him and his associates hanging around in the vicinity of the restaurant in the hours before he was shot.

'Mr Guzel said that around April 12 "Beyto" cut across him in his Mercedes and told him he believed that a group from Tottenham, you may think the Tottenham Turks, were responsible.

'They asked what they could do to help. Mr Guzel told them that they needed no help, that the matter had been reported to the police who were dealing with it through official channels.'

Mr Guzel said 'Beyto' and another man met with his father on another occasion and accused him of giving money to the Tottenham gang.

'They said that the Tottenham group were their enemy and gave his father a week to give them £100,000,' Ms Bickerstaff said.

Mr Guzel told police that on the day he was shot he saw 'Beyto' and another male sat outside Adana restaurant, which is located near to Umut 2000.

Ms Bickerstaff said: 'He saw the grey Mercedes, he associated with Beyto, parked nearby in Salcombe Road. 

'He thought it was odd because there was a male sitting alone in the Mercedes.'

She said that before the shooting Over and Gunduz were in touch with each other on 'dirty phones' before going back to the area of the restaurant. 

'Mr Gunduz and his associates from the Hackney gang were visible in the area of the restaurant, Ms Bickerstaff said. 

Around 10.40pm, Over parked the Kia near the restaurant, where he waited until Mr Guzel left, the prosecutor claimed. 

The shot was fired at 10.51pm.

CCTV showed the white Kia pass the restaurant before customers ran out of the restaurant to see what had happened and ran to assist Mr Guzel.

'Within moments of that, on Midhurst Way, a large flash can be seen which is the car being set on fire,' Ms Bickerstaff said.

Gunduz was arrested when police stopped a grey Peugeot on the A13 near Dagenham Leisure Park on July 18. 

He declined the services of a solicitor and made no comment in interview.

Gunduz denies conspiracy to murder and an alternative charge of conspiracy to cause grievous bodily harm.

The trial continues.