CAMBRIDGE (CBS) — Police are looking for a man who was apparently throwing sucker punches at random victims on a Cambridge sidewalk where one of the assaults was captured on video.

A witness says a man and woman were leaving a store on Massachusetts Avenue near Dana Street when an assailant approached from behind and punched the man in the head Saturday afternoon.

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A man seen in this surveillance image sucker punching a man on Mass. Ave in Cambridge, Feb. 15. (Image courtesy: BoConcept)

A man seen in this surveillance image sucker punching a man on Mass. Ave in Cambridge, Feb. 15. (Image courtesy: BoConcept)

The man was staggered by the punch and both he and the woman fell to the ground, suffering minor injuries.

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Cambridge Police said the suspect punched another man in the face earlier in the day.

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