send out

"When other fish get caught in those nets they sort of flail and it sends out a vibration underwater, sort of like ringing the dinner bell," says Prof Pepin-Neff.

The Office of Emergency Management, which is in charge of sending out alerts, said there were no technical issues.

He said he had a public duty to send out a strong message to anyone tempted to drink and drive.

Every autumn for the past 25 years, Network Rail has sought to remedy this by sending out a fleet of specialist trains to clear the tracks with high-pressure water jets.

Serbia have called on "supporters to send out an image to the world that will make us all proud" as they prepare to host England in Tuesday's World Cup qualifier.