A ferry terminal in Jersey, England, had to be cordoned off while a live Second World War hand grenade was recovered from the trunk of a car.
The owner of the car had found the Mills hand grenade in her home, where it had been for decades.
She had been taking it to a police station but called the States of Jersey Police who directed her to the harbor, where a bomb disposal officer recovered it.
It still contained high explosives and it has been taken away for disposal, the force said.
Following the incident, police urged members of the public who find old firearms or military items in their homes not to touch or move them and contact the police.
One Twitter user also added a fourth, very specific tip.