Three days after former Pakistan premier Benazir Bhutto was assassinated, her son Bilawal has been named the chairman of the Pakistan People's Party.

The decision comes after a high-level meeting of the PPP members in Larkana, where the post funeral services took place for the slain leader.

Speaking at an emotionally charged press conference, Zardari said that Benazir had named him as her political successor.

However, Zardari said he wanted his son Bilawal to take charge of the party.

''From now on my son's name will be Bilawal Bhutto Zardari,'' he said.

Putting forward a composed look, 19-year-old Bilawal said, ''My mother used to say democracy is the best revenge.''

Amid loud sloganeering by Bhutto supporters, Zardari sought an international probe into the murder of the two time prime minister.

Zardari also urged Nawaz Sharif not to boycott elections.

Bhutto's husband Asif Zardari, Abdul Makhdoom Fahim, deputy leader of PPP and Shah Mehmood Qureshi have been named co-chairmen of the party.

Fahim was widely known as Benazir's right hand man. He led the party in Benazir's absence, from 1999 to October 2007.

A Benazir loyalist, Fahim is the quintessential party man, who never wavered in his loyalties towards his leader in all these years. He was in the same vehicle as the now departed leader, at the time she was assassinated.

Earlier in the day, Bhutto's close aide Sherry Rehman had told NDTV that PPP cannot thrust party leadership on Bilawal.

Rehman had said that Bilawal was keen to complete his studies but that does not rule him out.

Meanwhile, a special memorial service, called the soyem, took place for the slain former Pakistan premier in her ancestral village in Larkana in Sind, on the fourth day after her death.

Family politics

While all eyes are on Bilawal Bhutto, his estranged cousins Fatima and Zulfikar Bhutto junior are slowly building up their political profiles.

The children of Benazir's brother Murtaza have often been publicly critical of Benazir's politics.

However, speaking exclusively to NDTV's Managing Editor Barkha Dutt in Larkana in Pakistan, Fatima Bhutto says she mourned her aunt as a family member but would express her political differences through her writing instead of party politics.