More than 1,000 homes in Plymouth have been evacuated after an unexploded Second World War bomb was discovered at a building site. Officials have confirmed the device, identified as a 250kg German SC250, will be detonated in situ. The discovery in Flamborough Road, Southway, led to a 400-metre cordon, with military experts concluding the device cannot be safely moved. “Royal Navy and Army unexploded ordnance specialists have now completed a rigorous and detailed assessment of the device,” a council spokesman said. “They have advised that it is not possible to safely remove it. “The only safe option is to make the device safe in situ, which will involve a controlled detonation. “This is planned to take place on Friday, once all safety measures are fully in place.” The council said specialists were building a “sand mitigation structure” to reduce the impact of the blast. “You will not be able to see the detonation and people are asked to stay well away from the area,” the spokesman said.…