Japanese lucky charms turn out to be radioactive

A Japanese duo who marketed charms said to glow for more than a decade ran out of luck themselves as it came to light that the products were radioactive, police said Thursday.

The pair were based in Hiroshima, site of the world's first atomic attack, where they sold cellphone straps containing tritium, a radioactive substance that can be used in nuclear weapons.

They imported the tritium from Britain and sold the straps through a website, saying the charms would "shine for more than 10 years."