People are being urged to avoid part of Great Yarmouth today after a major incident was declared following the discovery of an unexploded bomb.

Army specialists remain on scene and a 400m police cordon has been set up at the site of Great Yarmouth's third crossing project.

Several roads have been closed and rest centres have been established in the seaside town.

The device, believed to date back to the Second World War, was discovered at about 11.36am on Tuesday.

It was found during dredging work in the River Yare at Bollard Quay close to the junction with Boundary Road.

Police have declared a major incident and warned the cordon will likely be in in place until later on Wednesday.

Local policing commander Chief Inspector Matt Dyson, of Norfolk police, said: “Our priority will always be the safety of the public and we’re working alongside our partners and taking advice from army experts around cordons while work continues to safely resolve the incident.

“We appreciate the measures put in place for people’s safety will cause some disruption however public safety is paramount and we would advise people these restrictions will be in place overnight and into tomorrow.

“Rest centres have been opened and officers along with staff from the borough council are visiting homes to check and identify any vulnerable people who need assistance.”

Southtown Road is closed from its junction with Tollgate Road all the way to Beccles Road.

Williams Adam Way, off Southtown Road and Tollgate Road, off Southtown Road, are also closed.

Litchfield Road, off Southtown Road, and Boundary Road, off Southtown Road are partially closed.