200,000 mark ex-PM's killing

More than 200,000 people at the Bhutto family mausoleum in Garhi Dera Bakhsh to pay their respects.

They also heard Bilawal Bhutto Zardari, the son of Benazir and President Asif Ali Zardari, make his first major public speech.

Ms Bhutto was killed in a suicide attack in Rawalpindi on December 27 2007.

No-one has ever been convicted of her murder.

Security was tight around a huge stage and helicopters hovered overhead.

Police said more than 15,000 officers had been deployed, as well as 500 paramilitary troops.

The Bhutto dynasty has been a force in Pakistani politics for almost all of the country's 65-year history.

Benazir's father Zulfikar Ali Bhutto, who founded the Pakistan People's Party (PPP), led the country from 1971 until he was ousted in a military coup in 1977.

As head of state President Zardari, who came to power in elections held a month after his wife's murder, is barred from leading the PPP election campaign.

He is also hugely unpopular, tainted by years of corruption allegations.

A general election is due in the spring and the Bhuttos are an almost ever-present element in the rhetoric of PPP leaders, who frequently eulogise the party's two "martyrs" as supposed champions of the common man's struggle against a repressive Establishment.