11.12am: Federal Court upholds Court of Appeal decision by 5-0 and confirms that Zambry is the rightful Perak menteri besar in MB vs MB case.

11.04am: Federal Court says: "There is no requirement in state Constitution which requires a vote of no-confidence to be taken in the state assembly".

10.54am: Federal Court notes the test Nizar had lost confidence of majority of assembly had been satisfied in a special palace meeting between Sultan and 31 state assemblymen.

10.47am: Federal Court finds Court of Appeal justified to reverse High Court decision based on Sultan's rejection to dissolve state assembly which was made under Article 16 (6) of the Perak Constitution which requires Nizar to resign and not under Article 36 (2).

10.30am: Crowd outside court looked calm and quiet. No more cheering or jeering at the moment.

10.16am: Chief Judge of Malaya Tan Sri Arifin Zakaria reading out judgment.

10.10am: Buzzer sounds. Judges enter, ready to start.

10am: A banner with the words "Mahkamah Rakyat Nizar MB" is seen, drawing shouts of "Hidup Rakyat" from PR supporters.

9.58am: DAP veteran Lim Kit Siang manages to get a seat in the back of the court.

9.55am: Police and FRU personnel separates supporters from both sides outside the porch at the Palace of Justice by some 25 metres to 30m apart.

PUTRAJAYA: Under the watchful eyes of the police, some 150 youths donning tee shirts with "Daulat Tuanku" on the back today gathered at the Palace of Justice.

After a short prayer and shouts of "Daulat Tuanku", the gathering is here to await the Federal Court decision in the Perak constitution tussle.

Besides the youths, several Umno officials donning party shirts with Ipoh Barat division written on it are here as well.

More than a year after the Pakatan Rakyat (PR) government in Perak was unceremoniously overthrown by its Barisan Nasional (BN)counterparts, the apex court is set to announce its verdict today.

Inside the courtroom, it is now packed with journalists, lawyers and several BN politicians from Perak.

Perak BN's Speaker Datuk R Ganesan is already in court while a policeman said that a seat has been set aside in court for BN Menteri Besar Datuk Seri Dr Zambry Abd Kadir.

PR MB Datuk Seri Mohammad Nizar Jamaluddin arrived at 9.10am amid shouts of "Dissolve Perak Assembly" and "God is great" by his 100-odd supporters.

The yellow-clad BN jeered Nizar as he entered the court building while police just watched. Nizar was accompanied by his wife and DAP's Datuk Ngeh Koo Ham and shook hands with BN men, including Ganesan and Datuk Chang Ko Youn .

PAS supporters are seen praying outside court building.

PR lawyer Edmond Bon Twittered, "From my limited experience this may be sign BN has got 'wind' of a BN win. Have not seen them turn up in full force in any court during case".

Federal court will decide the outcome of the Nizar vs Zambry today.