An eleven year old boy found an unexploded bomb in a city centre waterway.

He was magnet fishing in Jesus Green, with his father and brother when he found the device.

A bomb squad was called to the scene and cordoned off the area.

Police and fire and rescue were also in attendance.

A spokesman for Cambridgeshire Police said: "A unexploded mortar shell was pulled out of the river 2.20pm.

"Chesterton Road to Castle Hill and Mitcham's Corner are closed.

"Police, fire and a bomb squad are in attendance."

Monty told Cambridgeshire Live: “I had already pulled out some stuff, some scrap metal and I threw it [the magnet] in the middle of the river, I felt something on the end I slowly pulled it out the water.

"I looked at it and told Daddy I have a mortar shell on the end of the magnet."

He added: "It's not what I was expecting, I thought it would be a bike wheel, not a mortar shell."

You can read more about it in our live blog below.