A high school was put on red alert following reports of a person with a gun in the playground.

But luckily it was just pupils playing around with a prop gun thought to be borrowed from the drama department.

Armed officers descended on Thorpe St Andrew High School on March 2 after a call from an alarmed neighbour who mistook the youngsters' game for a serious incident.

But when police arrived at around 3pm they were met by confused and embarrassed students.

Pupils and their parents were relieved to hear the report was a false alarm.

One mum, whose son attends the school, said: "The first I heard about it was in the group chat me and some other mums have.

Norwich Evening News: Armed police were spotted outside the school, talking to a member of the public.Armed police were spotted outside the school, talking to a member of the public. (Image: Submitted)

"Luckily my son was already home but I was obviously concerned for the other parents I knew and their children.

"Some were saying there were armed police at the school and rumours had already started going around.

"A few of the mums were calling the school and they got a text back quickly with an e-mail to reassure everyone it was a false alarm.

"It's definitely not a nice situation to be in - I was panicked but I think the school responded very well.

"I'm glad my son left when he did - I can't imagine how some parents must have felt."

Hanna Preston was driving past the school at the time the incident happened and watched the chaos unfold.

She said: "The police were on the opposite side of the road, directly opposite the school entrance.

"There were six 4x4 SUVs, a dog unit and two fully kitted-out policeman.

"I actually have a child who's just accepted his place to start at Thorpe so naturally I was concerned.

Norwich Evening News: The firearm was reported at Thorpe St Andrew High School in Laundry Road.The firearm was reported at Thorpe St Andrew High School in Laundry Road. (Image: Submitted)

"But I was very happy to see how many attended the scene and seemed to be handled well by them."

A police spokesman said: "Police were called to Laundry Lane in Thorpe St Andrew shortly after 3pm yesterday, following reports a person had been seen in the area carrying a black handgun.

"Firearms officers attended and conducted a search of the area.

"Following further enquiries, an imitation black handgun used as a filming prop was recovered by officers."

Thorpe St Andrew High School declined to comment further.