Emergency services at the scene of the attack in Istanbul
Two masked gunmen have stormed a church in Istanbul during the Sunday service.
At least one person has been killed during the attack on the ISanta Maria Church in the Sariyer district of the major Turkish city.
According to a statement from Interior Minister Ali Yerlikaya, the two opened fire on the church at around 11.40am.
He did not specify what kind of weapons were used or whether anyone else was injured.
An investigation is under way and authorities are working on capturing the two assailants, Mr Yerlikaya said.
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