( CNN ) -- Inter Milan celebrated their fourth successive Scudetto with a 3-0 home victory against Siena on Sunday as coach Jose Mourinho demanded total commitment from his players . Coach Mourinho demanded total commitment from Inter as they celebrated another Italian title . Inter were crowned champions on Saturday after closest challengers and city rivals AC Milan went down 2-1 at Udinese . Any thoughts they would take their foot off the gas were dispelled as goals from Esteban Cambiasso ( 45 ) , Mario Balotelli ( 52 ) and Zlatan Ibrahimovic ( 76 ) secured the win . `` It was important to win , there would n't have been much point to our party if we had n't won , '' said Mourinho . `` This was a serious match , we were n't kidding around . Our strength is that we always play very seriously . `` Even today I got angry because we still had the aim of winning the top scorer trophy , not for ( Zlatan ) Ibrahimovic but for the whole team -- even ( Mario ) Balotelli had to play for Ibra . '' The Swede scored his 22nd league goal of the season in the 76th minute and is only one goal behind Bologna 's Marco Di Vaio in the Serie A goalscoring charts . But it was captain Javier Zanetti and goalkeeper Julio Cesar who pleased Mourinho the most . `` The player who surprised me the most was Zanetti . His passport can not be telling the truth ( claiming he 's 35 ) , it must be 10 years out , he 's incredible , '' added the former Porto and Chelsea manager . Mourinho has already started looking ahead to the quest for a fifth successive Serie A crown and already has transfer targets in mind , such as Genoa 's Diego Milito . `` If you win one , a second and then more titles it 's difficult and a fifth will be harder still , '' he said . `` We are not very far from signing Milito , who is a striker in top form . `` We need a second striker . This year we had big problems in central midfield and we need two players there with physical strength and a different tactical ability to the players we have at the moment . `` And then a defender other than two or three in the youth team that I like a lot . '' Milan 's hold on second place was strengthened as Juventus could only manage a 2-2 home draw with Atalanta with Fiorentina a point back in fourth after they beat Sampdoria 1-0 . Genoa came from behind to secure the point they needed to qualify for the Europa League next season thanks to a 2-2 draw with Chievo . Roma hold the last European spot , but are just two points ahead of Palermo after the Sicilians beat Lazio 2-0 . Meanwhile , veteran Inter midfielder Luis Figo has announced that he will retire at the end of the season . `` I finish in the best possible way , '' Figo told Portuguese sports newspaper Abola . `` I will no longer play at a high level . '' Figo , 36 , won four Primera Liga title in spells with Barcelona and Real Madrid before joining Inter in the summer of 2005 . `` This is a first for me , '' he added . `` I 've never won a title without playing . It 's always difficult to win a league title in Italy . But with respect to the previous Serie A titles , this one feels different because it has been slightly more difficult . ''
Inter Milan mark fourth successive Serie A title with 3-0 victory against Siena . Jose Mourinho 's side can not be caught after AC Milan 's defeat at Udinese . Veteran Inter midfielder Luis Figo says he will retire at the end of the season .