Sellafield Ltd have apologised for sending out an automated message informing residents of an emergency exercise.
A spokesperson said:
"Subscribers to the Sellafield Ltd automated telephone warning system may have received a message from us earlier this morning regarding an emergency exercise at Sellafield.
"This message was issued in error and we apologise for any confusion or concern it may have caused.
"We routinely carry out training exercises to ensure our emergency response teams are prepared for a range of scenarios."
