Bangkok, Thailand(CNN) Authorities in Thailand are scrambling to locate a metal cylinder with dangerous radioactive contents that went missing from a power plant this week, warning the public of serious health risks should they come across it. The cylinder, measuring 30 centimeters (4 inches) long and 13 centimeters (5 inches) wide, was reported missing during routine checks by staff on March 10, at the coal power plant in Prachin Buri, a province in central Thailand, east of the capital Bangkok. But a good thing, they said, was that the search area was extremely isolated