A Norfolk man, who was injured in the Tunisia terrorist beach attack along with his wife, has described the moment a gunman opened fire in a massacre which killed at least 38 people.

Tony Callaghan, who works for Norfolk Police, was at the resort in Sousse with his wife Christine and said he recognised the sound of gunfire immediately from his days in the Royal Air Force and started warning other tourists.

“I shouted to everyone, ‘This isn’t a fireworks display, you need to get yourself to safety now,” he told The Times.

“I remember seeing one old man wandering in a daze, I said to him, ‘You’ve got to get going’... The gunfire was becoming incessant.”

In the chaos, the 63-year-old was separated from his wife but could hear her screaming.

He told The Times he saw four bodies covered in blood as he ran from the pool to his hotel.

He then found his wife hiding behind a reception desk. “It was sheer luck,” he told the newspaper.

They then ran with 20 tourists to the back of the hotel but came to a dead end and heard gunfire again.

A bullet grazed Mr Callaghan’s leg and his wife was also shot in the right leg, he said. They are now being treated in hospital.

The death toll from Friday’s attack stands at 38, including five British tourists, with dozens more injured.

Norfolk Constabulary confirmed a member of support staff has been injured following the attacks.

Mr Callaghan works at North Walsham police station as a property officer.

Police said their injuries needed hospital treatment but are not life-threatening.

A police spokesperson said: “We are liaising with the Foreign and Commonwealth Office to ensure regular updates regarding the couple and to provide assistance to their family back home in Norfolk.

“We are also able to confirm that a Norfolk police officer was also, independently from the Callaghans, on holiday in the resort at the time of the incident. He is however safe and well.”