>> Piecing together the profiles of six killers. Bangladesh police on Monday trying to confirm the IDs of the attackers who shot and hacked 20 people to death at a restaurant in the capital, Dhaka. It's been three days since the attack, but apart from saying the six young men were all locals, police haven't released any full names, saying they're still chasing leads on social media, interviewing friends and family, and carrying out DNA tests.
Prime Minister Sheikh Hasina has called for two days of mourning as the country reels from its worst attack in more than 10 years. Details emerging online have also shaken the public, the young men apparently well-educated and from wealthy families, investigators tracing connections to a university in Malaysia and a top private school in Dhaka.
Police are searching for clues on how the killers may have been lured towards extremism. Islamic State has claimed responsibility for the attack, but Bangladeshi authorities insist it was the work of a local militant group. US Secretary of State John Kerry says Dhaka should carry out its investigation according to international standards and that Washington is standing by to help if needed.