Pictured – Man wanted for murder of former British Rolls-Royce boss: Suspect seen shopping before 74-year-old victim stabbed to death on his doorstep as police reveal new clues

The prime suspect in last week’s fatal stabbing attack in Germany in which British Rolls-Royce designer Ian Cameron was stabbed to death has been identified for the first time after detectives were able to match his appearance on CCTV footage to clothing found near the crime scene.

Cameron, 74, was found dead at his £3million mansion on Lake Ammersee in Upper Bavaria on Friday night.

The suspect, a tall white man with close-cropped blond hair and a short beard, was seen hours earlier at a convenience store less than a mile from the crime scene, wearing a gray T-shirt and blue pants.

CCTV footage from the scene later showed an unidentifiable man wearing a dark blue hooded sweatshirt, light-coloured trousers, gloves and a dark red backpack.

Investigators searching the area after Cameron was found dead discovered the backpack containing both items of clothing, suggesting the elusive attacker had changed his clothing a second time after the crime to avoid detection.

Police now suspect the killer rang Mr Cameron’s doorbell and attacked him when he opened the door, forcing Cameron’s wife Veronika Kloos, also a former BMW designer, to flee over a wall.

Suspicions arose that the designer had been deliberately targeted in the attack when it emerged that the cables to the security cameras above the garages where his valuable vehicles were parked had been cut.

CCTV footage from the scene later showed an unidentifiable man wearing a dark blue hooded sweatshirt and light-coloured trousers, as well as gloves and a dark red backpack

Police suspect the killer rang the doorbell at Mr Cameron’s home in Herrsching am Ammersee before attacking him

Ian Cameron (2L), a former top designer for Rolls-Royce, was murdered in his home last week

About 30 officers have been deployed to help search for the attacker after Cameron’s neighbours gave a description of the suspected assailant that closely matches his appearance in security camera footage.

The suspect is said to have been shopping at the Edeka supermarket on Seestraße, just 1.3 kilometres from the designer’s home, shortly before the attack on the Rolls Royce designer took place.

CCTV footage also showed the attacker wearing a red backpack and green-yellow gloves.

After the police used drones and even a police helicopter to search for the killer, they found the backpack. It is now being analyzed for usable DNA traces. This is an important step that could lead to a breakthrough in the case.

Super recognizers, specialists who can recognize faces even on poor-quality images or when perpetrators are wearing masks, are also being deployed to help identify the suspect.

The investigation team expanded the manhunt to the whole of Germany earlier this week.

Officials hope that new evidence from the backpack and surveillance camera footage will quickly lead to the arrest of the perpetrator.

Police suspect that the killer rang the doorbell at the house in Herrsching am Ammersee and launched his attack on Cameron when he opened the door.

Cameron’s wife Kloos fled over a wall to escape the attacker. She found shelter with neighbors, who called emergency services.

A short time later, the designer was found dead.

Woman Verena Kloos managed to get to the neighbors and call the police

Mr Cameron and his wife, Veronika Kloos, lived in a £3million home in Herrsching, Bavaria (File)

Investigators found that the surveillance cameras above the home’s garages had been turned off and the wiring had been cut.

An officer told According to The Sun, it is “extremely rare” for a burglar who prepares well to disable the CCTV cameras to then “stab and kill” someone.

Police called it a “violent crime” and said the attacker fled the home on foot.

Despite the leads, the search for the killer has suffered several setbacks.

Heavy rain on Friday night prevented the police helicopter from leaving on time, delaying the search until officers were able to deploy drones to map the area.

The day after the crime, divers and dog handlers combed the area, but so far they have found no trace of the attacker, apart from the backpack containing clothing seen in the surveillance footage.

Ian Cameron was a respected figure in the automotive industry and left a lasting impression on Rolls-Royce with his groundbreaking designs.

Before retiring in 2013, he was praised for his work on luxury cars including the 3 Series, Z8, Phantom and Ghost.

His untimely death shocked the small, quiet community on the shores of Lake Ammersee.