I found this interesting article in New Jersey:
Police on a routine patrol here early Saturday morning found radioactive material coming from a storage unit.
County and state HAZMAT units responded to the scene after it was first reported at 3:17 a.m., and confirmed the presence of radium-226 isotopes.
The radioactive material was coming from a single storage unit, where someone had put numerous antique watches. The watches’ faces were specked with radioluminescent paint, which glowed on the dark with radium, police said.
The incident was not related to terrorism, police said. All the material was recovered by 2:08 p.m. Saturday. There is “no immediate threat to the public,” police said.
In a news release today, police did not specify where the storage unit was located.
The department participates in the Department of Homeland Security’s Securing the Cities initiative. Several police officers in town have received training and equipment to detect and respond to radiological and nuclear material, in an effort to thwart potential terrorist attacks, police said.
According to the U.S. Nuclear Regulatory Commission, radium is commonly found in glow-in-the-dark watches made before the 1970s. Before that, it was commonly found in other household goods, even toothpaste.