Nuclear leak 'insignificant'

The US Nuclear Regulatory Commission said the small amount of radiation detected at the Three Mile Island nuclear power plant is not significant.

Specialist John White told ABC News there is no indication that radiation at the plant exceeded or even approached regulatory limits.

The commission sent investigators to the central Pennsylvania plant after a small amount of radiation was detected.

About 150 employees were sent home on Saturday afternoon, but officials say there is no public health risk.