A supermarket chain is investigating a fatal collision involving one of its lorries.

A man in his 60s was pronounced dead at the scene of the crash, which happened on the A1122 between Bexwell and Crimplesham, near Downham Market, this morning.

Tesco later confirmed the articulated lorry involved was one of its vehicles.

A spokesman for the supermarket chain added: 'We're urgently investigating this tragic accident. We are supporting the police with their enquiries.'

Police said a white Mercedes lorry was travelling along the A1122 towards Swaffham, when it was in collision with a pedestrian shortly before 1am.

The crash happened on a single carriageway stretch between the junction with New Road and the Murco filling station, where the limit is 60mph.

There is no suggestion speed was a factor and an inquest will be heard into the man's death once police complete their investigation.

One woman who lives near the scene said: 'I woke up at 4.30am. I came out and they had the black private ambulance there. The lorry was still there, the police took it and did a skid test. It was an artic, the trailer had Tesco on the side.' The woman, who did not wish to be named, said she had lived next to the A1122 for nine years.

'It's just too fast this road,' she added. 'It's too fast, it should be a 40mph. Every day there's screeches and beeping. It's got a lot busier, a lot faster, it's constant now.'

One worker at the Murco filling station said: 'They do go fast along the road but there hasn't been an incident there this year that I know of.

'Since I've been here I've only seen one accident in four years.'

Retired ambulance driver John Rutty, 82, has lived beside the road for almost 50 years.

'When I first came here in 1970 it was quite a relxed road,' he said. 'They do speed, they do really speed up here. It's lucky no-one's been killed yet.'

The road was closed whilst emergency services attended. It was reopened around 6.30am.

Anyone who saw the collision or the pedestrian walking along the road prior to the incident, should contact Norfolk police's serious collision investigation team on 101.