Kadyrbayev also decided to remove Tsarnaev’s laptop “because he did not want Tsarnaev’s roommate to think he was stealing or behaving suspiciously by just taking the backpack,” the FBI said.
After the three returned to Kadyrbayev’s and Tazhayakov’s apartment with the backpack and computer, they watched news reports featuring photographs of Tsarnaev. The FBI said Kadyrbayev told authorities the three men then “collectively decided to throw the backpack and fireworks into the trash because they did not want Tsarnaev to get into trouble.”
Kadyrbayev said he placed the backpack and fireworks along with trash from the apartment into a large trash bag and threw it into a garbage bin near the men’s apartment, according to court papers.
When the backpack was later found, inside it was a UMass-Dartmouth homework assignment sheet from a class Tsarnaev was taking, the FBI said.
The court papers do not say what happened to the laptop.
In a footnote, the FBI said: “Tazhayakov also informed the FBI agents that while eating a meal with Dzhokhar and Kadrybayev approximately one month prior to the marathon bombing, Dzhokhar had explained to Kadyrbayev and Tazhayakov that he knew how to make a bomb.”
Robert Stahl, an attorney for Kadyrbayev, said his client “absolutely denies the charges” and didn’t know that the backpack and fireworks were part of the bombing case. Kadyrbayev is “just as shocked and horrified by the violence in Boston that took place as the rest of the community is,” the lawyer said.
He also denied that Kadyrbayev instantly recognized Tsarnaev’s photo and said Kadyrbayev didn’t know Tsarnaev was involved in the bombing: “His first inkling came much later,” he said.
Tazhayakov’s lawyer, Harlan Protass, said Tazhayakov “feels horrible and was shocked to hear that someone he knew at the University of Massachusetts-Dartmouth was involved with the Boston Marathon bombing.”