Kurdish PKK rebels have denied responsibility for a bombing in Istanbul on October 31 that wounded 32 people.
The PKK, or Kurdistan Workers' Party, today also said they were extending a unilateral cease-fire until Turkey's general election next summer.
The announcement came in a statement posted on the Firat news agency, which is close to the PKK.
The month-old cease-fire expired on October 31.
No one has claimed responsility for the suicide bombing at Istanbul's Taksim Square, but Turkish officials have said the PKK was emerging as the most likely suspect.
Half of those wounded in the attack were police officers.
The United States condemned the attack and reiterated its support for the Turkish government.
U.S. Secretary of State Hillary Clinton said in a written statement that the bombing was "a shocking crime."
Kurdish rebels, Islamic militants, and leftist extremists have all carried out attacks in Istanbul in the past.
compiled from agency reports