️<unk>️<unk>️<unk>️  It was a sophisticated attack with sophisticated devices. (CNN) It was a sophisticated attack with sophisticated devices. (CNN) It was a sophisticated attack with sophisticated devices. Authorities quickly identified the Boston bombing suspects, but almost immediately after Tamerlan Tsarnaev was killed during the manhunt for the perpetrators and Dzhokhar Tsarnaev was captured, investigators privately questioned if more people were involved. <unk> Authorities quickly identified the Boston bombing suspects, but almost immediately after Tamerlan Tsarnaev was killed during the manhunt for the perpetrators and Dzhokhar Tsarnaev was captured, investigators privately questioned if more people were involved. ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą okhar Tsarnaev told the police he and his brother built the bombs, but court documents show some people involved in the case had their doubts. <unk>okhar Tsarnaev told the police he and his brother built the bombs, but court documents show some people involved in the case had their doubts. The bombs were described as powerful pressure-cooker explosives controlled remotely.<unk> The bombs were described as powerful pressure-cooker explosives controlled remotely. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk> 2 years after the attack Michael Marks, a former special agent for the Naval Criminal Investigative Service, agrees on the technical aspects of the bombs.<unk> 2 years after the attack Michael Marks, a former special agent for the Naval Criminal Investigative Service, agrees on the technical aspects of the bombs. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ "It would be my opinion that they had someone who was more of a skilled bomb maker, an engineer if you will, assist them in saying these are the steps you need to go through and then assemble the device to make it safe and to make it function the way they want". ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk> "<unk>ąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąąą <unk> <unk> <unk> <unk>
Investigators have always wondered if more people were involved in the bombings than just the brothers.<unk> Investigators have always wondered if more people were involved in the bombings than just the brothers. Former Navy investigator: I think "they had someone who was more of a skilled bomb maker.. assist them" ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️