Palestinian President Mahmoud Abbas has said he will not tolerate attacks such as last Friday's suicide bombing in Israel and has reaffirmed his commitment to peace.
In a newspaper interview published today, Mr Abbas blamed an unnamed party for sabotaging peace efforts.
"We believe peace is possible now and we are ready to negotiate with Israel to reach a true and lasting peace," Mr Abbas said ahead of a meeting in London tomorrow to discuss Palestinian reforms.
Palestinian President Mahmoud Abbas
"As for the suicide bombing last Friday, such actions will not be tolerated by us as they are against the Palestinian interests."
He confirmed Israel had shared information with the Palestinian Authority in the hunt for the organisers of the Tel Aviv nightclub attack, which killed four Israelis and wounded dozens more.
The Palestinian Authority has arrested three suspects.
Palestinian militant group Islamic Jihad claimed responsibility for the bombing, but Israel has also blamed Damascus, saying leaders of Islamic Jihad in Syria ordered the attack. Syria has denied responsibility.
A senior Palestinian security source said over the weekend that initial investigations implicated Hizbullah. The Lebanese guerrilla group has also denied any role.
Mr Abbas has only referred to a "third party" he believes is opposed to his peacemaking with Israel. "There may be other parties who want to destabilise the situation," he told the Independent.
Mr Sharon said yesterday Israel would freeze peace efforts unless Palestinians smashed militant groups.
Prime Minister Tony Blair will host the London meeting of senior politicians, including US Secretary of State Condoleezza Rice, UN Secretary-General Kofi Annan and European Union foreign policy chief Javier Solana.