Cleveland Police are investigating after beach cleaners discovered what could be a grenade at Seaton Carew beach.
Bomb disposal teams from Catterick Garrison are on the way to the scene.
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The nursery school pupil got her stool from the bathroom so she could reach the latch and open the front door to let the ambulance crew in.
A mixed bag for the weekend.
Ant McPartlin was charged with drink driving after he was involved in a crash at the weekend.