A thrift store called the cops after someone donated a WWII grenade they'd been using as a paperweight

• A thrift store had a scare after someone donated a hand grenade.
• The donor told local police that they'd been using the grenade as a paperweight. 
• Local police said the grenade was a decommissioned WWII-era Mills grenade. 

A thrift store in Canada had a scare on Monday after staff found a WWII-era hand grenade in their donation bin.