US intelligence officials have received threats that terrorists will strike a US nuclear power plant on 4 July, and are reviewing the information to determine if it is reliable.
The US government is taking the threats seriously, though officials have determined that the information is not credible enough to act upon. The alleged plot is not considered serious enough to formally warn the public or change the nuclear industry's already high level of alert.
The threat suggested that an unidentified terrorist group was planning to attack a nuclear power facility in the north east of the USA. It did not specify a target.
