(Adds details) ISTANBUL, Dec 30 (Reuters) - An explosion in a bar in eastern Turkey injured six people late on Friday, local television station CNN Turk said on its Web site. The police chief in Malatya said the explosion could have come from a percussion bomb, but that the reason for the blast was not yet known. "Rubble from where the explosion occurred has been gathered and the cause of the blast will be clear after investigation," police chief Ali Osman Kahya said on the Web site. Police gave no further details. Some victims of the blast saw the faces of those responsible, the report said, and police are searching for suspects. Ethnic separatists, leftists and Islamic militants have carried out bomb attacks in the past to gain exposure for their causes.
