Massachusetts Emergency Management Agency report states some cops showed lack of 'weapons discipline while hunting the Tsarnaev brothers ' They fired at suspects without 'necessarily having identified their target ' Also failed to appropriately aim weapons during April 19 , 2013 , shootout . Shortly after , one officer 'mistakenly fired on an occupied police vehicle ' Later in night , another cop 'fired weapon without appropriate authority ' However , report praises response of medical personnel after bombings . 'Every patient that was transported to hospital from the scene survived ' 264 people were killed in April 15 attacks - a further Three were injured .
Massachusetts Emergency Management Agency report states some cops showed lack of 'weapons discipline while hunting the Tsarnaev brothers ' They fired at suspects without 'necessarily having identified their target ' Also failed to appropriately aim weapons during April 19 , 2013 , shootout . Shortly after , one officer 'mistakenly fired on an occupied police vehicle ' Later in night , another cop 'fired weapon without appropriate authority ' However , report praises response of medical personnel after bombings . 'Every patient that was transported to hospital from the scene survived ' Three people were killed in April 15 attacks - a further 264 were injured .