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Suicide bomber kills five in attack on U.S.-Afghan patrol near Bagram - official
In a tweet, Taliban spokesman Zabihullah Mujahid claimed responsibility and said 19 soldiers had been killed and a number wounded.
NATO headquarters in Kabul confirmed there had been a vehicle-borne improvised explosive device attack near Bagram Air Base and said it was under investigation.
(Reporting by Mirwais Harooni; writing by James Mackenzie; Editing by Nick Macfie)