LIVE - Raila returns to Nairobi

4:43pm: Mr Odinga waves to the crowds as the rally ends.

4:38pm - As Cord, we must remain together. In Mombasa, Christians and Muslims must live harmoniously.

4:32pm - There is a solution for Kenyan problems. He says security and the country's economy must be restored. In 60 days, by 7th July, there must be a national conference.

4:29pm - Raila Odinga addresses the gathering, says he is happy and thanks his supporters for welcoming him. Many Kenyans called him, and wrote to him addressing the issues that have happened in Kenya while he was in US #BabaWhileYouWereAway

4:25pm - Kalonzo Musyoka asks the gathering to keep calm. He addresses insecurity and the issue of insecurity. He calls for a national dialogue by 7th July, otherwise, the Jubilee government "must go home." He says the government must be all-inclusive.

4:13pm - Nairobi Governor Evans Kidero attempts to address the gathering fails after the crowds reject him. Former vice president Kalonzo Musyoka appeals to the noisy congregation to let him speak to no avail.

4:08pm - Bungoma Senator Moses Wetangula on the podium, criticises the electoral commission on the ongoing voter listing. (Read: Cord politicians want foreigners to run IEBC) He says the ruling Jubilee coalition has failed in providing security to Kenyans.

3:58pm - Cord politicians now speaking, MPs Ababu Namwamba, Kakamega Senator Boni Khalwale, Homa Bay Senator Otieno Kajwang are some of the leaders who have spoken. Chants of Ouru (Uhuru Kenyatta) must go! Ouru must go! from the crowds.

Mr Kajwang spoke about the events that have happened while Mr Odinga was away. (Read: A hilarious account of what the former Prime Minister while he was away.  #BabaWhileYouWereAway... Kenyans take humour a level higher)

3:45pm - Raila arrives at Uhuru Park to an uproarious welcome

3:05pm - Opposition Cord coalition principal and former Prime Minister Raila Odinga has just arrived at the Jomo Kenyatta International Airport from the US where he has been away for nearly three months on a lecture tour.

Mr Odinga is being received at the airport by top coalition leaders including Governors Evans Kidero (Nairobi), Hassan Joho (Mombasa) and other politicians.

The Cord principal was earlier scheduled to give a press briefing and later head to address a rally at Uhuru Park.

Crowds of Cord supporters started streaming into the city early morning Saturday in groups and onwards into the park in single files where they are screened by policemen and Cord's security team, dressed in black.

Security is very tight at the park and is surrounded by policemen. (Read: Tight security as supporters prepare to welcome Raila)

(See: IN PICTURES: Cord supporters)

All access points to the park have been sealed off and crowds milling in for the rally as early as 4 am could only access the park through two entrances along Valley road and Uhuru highway.

Cord politicians have earlier said they expect a million supporters to throng the venue.

Scores of buses have been hired in the past few days to ferry Cord supporters to the city rally. Most of these are from the opposition strongholds of western and coastal regions in the country.

Such a mammoth crowd would easily be the biggest meeting Uhuru Park has ever hosted – more than estimated 500,000 people present during the inauguration of former president Mwai Kibaki in 2003 and also the crowd that was there when Pope John Paul II visited Kenya in 1995.

SECURITY CONCERNS

Inspector General of police David Kimaiyo had initially banned all political rallies on security fears.

He later rescinded his decision, reportedly on State House intervention. On Wednesday, Mr Kimaiyo said adequate officers had been deployed to cover the events “bearing in mind that some criminal elements may take advantage of these rallies to attack.”

There was a security scare at Uhuru Park Friday over an unattended bag at the venue, with police being called in to check its contents.  The incident caused ongoing preparations to be halted as security officers cordoned off the area.

The scare did not last long, however, as the bag found its owner.

Cord leaders later on addressed a press conference there, urging supporters to keep the peace during today’s rally.

Mr Odinga had through a statement earlier appealed to his supporters to be peaceful during and after the Uhuru Park rally. He asked supporters to keep off the airport due to security and to avoid inconveniencing travellers.