Six lead containers of radioactive cobalt have vanished from a cast iron factory which has fallen into bankruptcy in Lublin, eastern Poland, Poland's National Atomic Energy Agency (PAA) said Wednesday.
"The matter concerns seven containers of radioactive sources measuring 9 to 20 Megabecquerels (MBq). This cobalt can be dangerous to anyone opening a container, " Monika Skotniczna, a PAA official told AFP.
The PAA discovered the cobalt was missing during an inspection in early November and immediately informed police, neighbouring states and all fellow European Union members, Skotniczna said.
Radioactive cobalt is used as a radiation source for industrial radiography.
According to the PAA, the containers, each made from 40 kilograms (88 pounds) of lead, were most likely stolen for sale as scrap metal.