The Killers have unveiled their fourth Christmas single, 'Happy Birthday Guadalupe'.

The song, which is available now as a digital download, has been released in conjunction with the AIDS charity, (RED).

All proceeds from the single will go towards the Global Fund to fight AIDS in Africa.

The Killers' previous Christmas songs - 'A Great Big Sled', 'Don't Shoot Me Santa' and 'Joseph, Better You Than Me' - have all been released alongside (RED).

A video for 'Happy Birthday Guadalupe' has also been made available online and can be seen below.

(by Jason Gregory)