Boston Bombing Suspects Shown In Gym Video, Working Out 3 Days Before Attack

Never-before-seen video obtained by CNN shows Boston bombing suspects Tamerlan and Dzokhar Tsarnaev only three days before allegedly carrying out the attack.

The footage, recorded on security cameras at Boston's Wai-Kru Mixed Martial Arts gym, shows the brothers entering the building and doing various exercises in the facility's boxing ring. The manager of the gym told CNN that he was surprised by Tamerlan's appearance that day: the 26-year-old, who had become an increasingly more devout muslim toward the end of his life, arrived at the gym without the "bushy, religious beard" that he had worn for two years.

The manager also told CNN that Tamerlan caused a scene that day after he and his brother were asked to remove their shoes at the door, per gym policy. While Dzkokhar removed his shoes without issue, Tamerlan is shown in the video arguing with the manager, who said he later asked the gym's owner to ban the "arrogant" and "selfish" Tsarnaev.

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