(Portland, OR) -- One person is dead and three others are injured following a series of crashes involving a pedestrian in Northeast Portland. The Portland Police Bureau says the incident happened yesterday on Martin Luther King Junior Boulevard when a car drove onto a sidewalk, killing a pedestrian and nearly hitting a child. The driver continued, hitting three other vehicles. The driver and two other people were hospitalized with non-life-threatening injuries. The driver's car was modified for a person with disabilities. The investigation into the cause of the crash is ongoing.