A late goal at Elland Road saw 10-man Brighton beat nine-man Leeds to secure a play-off place for Gus Poyet's side in an ill-tempered match.
Will Buckley opened the scoring for Brighton in the 10th minute, with Leeds midfielder Rodolph Austin shown red shortly after.
Brighton's Inigo Calderon was sent off midway through the second half for a challenge on El-Hadji Diouf, who scored the resulting penalty before being sent off himself after appearing to abuse the away fans following the goal.
Jose Ulloa had the final word as he headed a late winner for Brighton.
BLUE SQUARE BET PREMIER
Relegated: Telford, Ebbsfleet, Barrow, Stockport.
Relegated: Bristol City.
NPOWER LEAGUE ONE
Relegated: Scunthorpe, Bury, Hartlepool, Portsmouth.
NPOWER LEAGUE TWO
Promoted: Rotherham, Port Vale.
Relegated: Barnet, Aldershot.
Portsmouth Community Football Club has unveiled its management team to lead it into a new era of community ownership. The new team manager will be Guy Whittingham who has been in caretaker charge of team affairs since November.
The keys to Portsmouth Football Club could be handed to the Supporters Trust before tomorrow's match against Sheffield United at Fratton Park.
The Trust successfully took control of the club last week and lawyers are currently working to rubber stamp the process.
This time 5 years ago, Portsmouth had Crouch, Johnson, Diarra, Defoe, Muntari... Now they are relegated to league 2.
Portsmouth relegated to League 2. FA Cup Winners less than 5 years ago.
Portsmouth have been relegated to League Two without even kicking a ball.
Oldham’s 1-0 victory over Yeovil on Tuesday night night means they cannot now be caught by the Blues.
But an impending 10-point penalty meant Pompey were effectively already down.
The future of Portsmouth Football Club could be decided today. The club's administrators are due at the High Court to try to release the club's former owner, Balram Chainrai's fixed charge on the Fratton Park ground and force the stadium's sale.
If a judge rules in the administrator's favour the Pompey Supporters Trust can proceed with their takeover.
The Portsmouth Supporters Trust (PST) say it's pleased after the latest court hearing regarding the future of the club. The club has been in administration since February last year, with millions owed to creditors and the tax man. The PST want to take over the running of the club.
PST chairman Ashley Brown said: 'As presented in court today our bid is fully funded and ready to go and we hope a date can be found in the near future to resolved this matter so the Trust can start the job of rebuilding the club.
'The Football League has also cleared up any confusion by making it clear for a third time that it will only consider a bid from PST."
The administrators of Portsmouth Football Club, PKF, have responded to the news from the High Court that the case to determine the future of the team will take place by 19 April at the latest.
The club has been in administration since February 2012. A collective of fans and supporters The Pompey Supporters' Trust are hoping to buy the club. The court case hinges on the ownership of the side's Fratton Park ground.
“We are pressing ahead with the case that is seeking the court’s consent for the disposal of Fratton Park to the PST (Pompey Supporters Trust).
"The court has this morning confirmed that the case will be heard by 19 April at the latest, which will enable us to meet the Football League's deadline for the sale of the club, subject to a favourable ruling. We hope that, in the next few days, the court will be able to set a specific date for this hearing.
"The court was also made aware that correspondence has been exchanged between the Football League and Portpin which seems to lead to some ambiguity with the League's previous public statements that no other bid would be considered at this late stage. We will be seeking clarification from the League as a matter of urgency."