DUBAI, May 25 (Reuters) - A group calling itself al Qaeda's wing in the Levant vowed to carry out bombings in Lebanon and attacks on Christians unless Beirut pulled its army away from Palestinian refugee camps where it has been fighting Islamists.

"No crusader will be safe in Lebanon after today. As you hit you will be hit," said a speaker identified as the military leader of the group in a Web recording posted on Friday.

"What we want is that you order the Christian Lebanese army to pull its men from around all Palestinian camps and the Nahr al-Bared Camp in particular," the speaker said. "If you do not stop we will wrench out your hearts with ... bombs."

A fragile truce held between the army and the Fatah al-Islam militant group in northern Lebanon at the Nahr al-Bared camp, where the faction is based, despite sporadic overnight clashes. (Reporting by Inal Ersan, editing by Richard Balmforth;Gulf newsroom; +971 4 366 4255, fax +971 4 391 8335; inal.ersan@reuters.com; Reuters Messaging: inal.ersan.reuters.com@reuters.net))

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