Chinese officials say potentially deadly radioactive material lost in north-western Shaanxi province may have been melted down at a steel mill.
The Caesium-137, encased in lead, was lost this week when workers at a cement plant demolished an old factory.
Eight truck loads of scrap were sold to a local steel mill and officials say the radioactive material may have been melted down.
Officials say they are mounting a clean-up operation at the steel mill.
The radioactive material was part of a measuring instrument and is extremely toxic.
The smallest amount of Caesium-137 can cause infertility, cancer and even death.