ROYAL Navy bomb disposal experts from Portsmouth detonated a historic mortar which washed up by the River Thames.
The team of Southern Diving Unit 2, which is based at Horsea Island in Portsmouth, were sent to Windsor at around 8am today.
A mortar, which had decayed over time, was found washed up on the banks of the River Thames there.
Parts of the river were temporarily shut off to marine traffic, and roads were cordoned off by police while the explosive experts inspected the device.
It was then detonated in a controlled explosion.