Bullet hole through student's calendar
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Boston eyewitness: 'Bullet came through my wall'

US police are hunting a suspect in Monday's deadly Boston Marathon bombing in a small town near the city.

A huge police operation started after an officer was shot dead on a university campus.

Local resident Kristian Tuinzing described explosions and gunfire during which a bullet came through his wall, piercing his calendar and chair.

Go to next video: Witnesses describe hearing gunfire