By Megan Reeves
The incident involving three male victims took place on Church Road just after 1:00pm.
The attackers, two males who have yet to be identified, have been arrested on suspicion of murder.
One victim sustained life threatening injuries and was taken to Brighton Royal Sussex Hospital where he is currently being treated.
Another victim, was taken to the same hospital with as yet undisclosed injuries.
East Sussex Police are not looking for anyone else in their investigation at present.