Exclusive: What made this bomber attack Sri Lanka?

One of the perpetrators of the most recent Sri Lanka attack, attributed to supporters of Islamic State, was filmed on CCTV – in the hours before the attack.

In pictures released to Sky News, Mohammed Nasar Mohammed Azar is shown arriving in the town – where he exploded his device inside a church – killing 27 people.

Sky’s Deborah Haynes has this exclusive report.

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