Transcript for Sri Lanka on high alert as officials warn of 'ongoing terrorist plots'
Next tonight to chilling video from the attacks in Sri Lanka. Investigators looking closely at this surveillance here, a suspected suicide bomber walking into brunch at a hotel, scoping it out moments before the blast. James Longman in Sri Lanka tonight. Reporter: Tonight, Sri Lanka on high alert as U.S. Officials warn of ongoing terrorist plots. Investigators keying in on surveillance footage from the moments just before the deadly attacks. Images broadcast on Sri Lankan TV from the cinnamon grand hotel show a man in a backpack lingering in the dining room. Minutes later, an explosion tears through the crowded restaurant. Hours after the first explosions, a tip led police here. This is a safe house in Colombo which is believed to have been used by at least some of the suicide bombers. A woman detonated her suicide vest, killing three officers, and her two children. According to police sources, the identical bombs may have been made in this copper factory, possibly by one bomb maker. ISIS says this photo shows the attackers. The man at the center, a key operative known as Zahran Hashmi. His name right here on an advisory warning of a suicide terrorist attack, planning to target some important churches. That advisory dated April 9th. 12 days before Easter Sunday. David, tonight, the Sri Lankan president is demanding the resignation of the defense secretary and the chief of police. It is thought the main coordinator was not in the country. This could be the single largest attack anywhere in the world. James, thank you. South Korean leader Kim
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