A bomb packed with shrapnel has been thrown into the grounds of a police station in Castelderg, Co Tyrone.
A PSNI spokeswoman said a coffee jar device packed around with nails was found inside the compound shortly after noon.
She said it was believed to have been thrown over the perimeter wall "with the intention of it detonating on impact causing death or serious injury".
It was defused by a British army technical team.