This is the terrifying moment masked gunmen storm a church in Istanbul during Sunday Mass before opening fire in an attack that left one dead.
Security footage ahead of the attack showed a pair of men wearing black snow masks with their hands in their pockets and one was seen wearing black sunglasses.
They entered the Santa Maria church in the Sariyer district of Istanbul and fired shots at around 11.40am (8.40am UK time), killing an individual identified only as C.T., a 52-year-old Turkish citizen, who was among those attending Sunday's service. ---More...