UPDATE 2 - 4 soldiers martyred in helicopter crash in Istanbul

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By Sefa Mutlu

ISTANBUL (AA) - At least four soldiers were martyred when a military helicopter crashed on Monday during emergency landing in Istanbul, the provincial governor said.

Ali Yerlikaya told reporters that the helicopter crashed near a residential area in Cekmekoy district at 6.51 p.m. local time (1551GMT).

The cause of the crash remains unknown, he added.