Lewis Dunk headed in from a corner to get the fourth and Brighton were out of sight with less than half the game played.
The manner of Leeds' performance led owner Massimo Cellino to leave the match at half time, and although his side improved after the break, there was little in terms of chances the Italian missed.
After the game, Steve Evans was expected to fulfill his obligatory interview for television, as well as a post match press conference for the wider media.
However, it was assistant boss Paul Raynor carried out the club's post-match television interview, but didn't speak to any other journalists, with the club this morning still not giving a reaction to last night's match.
When speaking to Sky Sports last night, Raynor said, "The first-half performance was shambolic. Our defending was atrocious and the manager is going to dissect it with the players."
"We only had 15 minutes at half-time to try to put a shape together and to show a bit of pride and commitment and heart out there and I felt we did that in the second half."
"But the first half was absolutely shambolic and it simply was not good enough."
"We can't worry about the chairman. If I was him I would have gone as well to be fair, because he doesn't want to see his football club playing like that and I don't blame him for that."