UNITED NATIONS, Oct 19 (Reuters) - U.N. Secretary-General Ban Ki-moon is "concerned" about the Turkish parliament's vote to authorize troops to cross into Iraq to hunt Kurdish rebels, his spokeswoman said on Friday.

Baghdad, backed by Washington, has urged Turkey to refrain from military action, saying that could destabilize the wider region, but has also told the rebel fighters of the Kurdistan Workers Party, or PKK, to leave Iraq.

"Recent attacks by the PKK inside Turkey have been rightly condemned by the international community," Ban's spokeswoman, Michele Montas, said in a statement.

"However, the secretary general is concerned about the decision by the parliament of Turkey enabling the armed forces to take cross border military action in Iraq against PKK targets," the statement said.

"The secretary general strongly urges all sides to demonstrate restraint at this delicate juncture," it said.

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