Washington state police are investigating a video uploaded to YouTube that captures the death of a man shot repeatedly by police.

The video, taken by a bystander, surfaced Wednesday, a day after the Tuesday shooting death of Antonio Zambrano-Montes, 35.

Pasco Police Department officers were called about 5pm to respond to a report that a man was throwing rocks at a crowded intersection in the town of Pasco, according to the Department Chief Bob Metzger. Two officers were hit by rocks. A Taser did not subdue the man, who had a prior police assault conviction and served six months' jail time for it.

The video, which sparked protests, shows police firing at the man then chasing him across a busy intersection and shooting him multiple more times. About a dozen shots were fired, according to the video.

Metzger said it would take months before the investigation, conducted by another department, would conclude.

“We are at this point doing a thorough investigation. If the officers are wrong they will be dealt with accordingly. If they are not wrong, that will also come out.”

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The video is among a recent wave of footage uploaded to YouTube capturing police-involved shootings. The videos have come from a variety of sources, taken by bystanders and police officer dash or body cams. This latest video comes amid a growing outcry from the public demanding more accountability of police in the wake of the August shooting death of an unarmed 18-year-old boy in Ferguson, Missouri. One solution, offered from as high as President Barack Obama, is to outfit police officers with body cameras. Law enforcement departments have been gobbling up these devices following Ferguson, in which victim Michael Brown's death was not videotaped.

The American Civil Liberties Union said in a statement that the Pasco video was "very disturbing."

“Fleeing from police and not following an officer’s command should not be sufficient for a person to get shot. Lethal force should be used only as an absolute last resort," said Kathleen Taylor, the ACLU executive director of Washington. "Police need to understand how to de-escalate confrontations and use force only as necessary."

A Pasco resident, Benjamin Patrick, told the Seattle Times that he saw Zambrano-Montes yelling at the police. He said he saw the victim pull a stun-gun dart from his arm. He then began walking across the busy street.

"That’s when they started shooting," Patrick said, recalling about five shots. "I could not believe they were shooting guns. There were cars and people everywhere.”

He said the man was shot while walking across the street. "I saw him react, sort of jump, like he’d been stung by a bee," he said. But the man kept walking and police continued tailing him, he said.

The video shows the man turning toward police, as if he was going to throw more rocks. A second volley of shots rings out and Zambrano-Montes falls to the pavement.

Police told the paper they had to fire because they were threatened.

The Pasco Police Department said the officers involved in the shooting included Ryan Flanagan, Adam Wright, and Adrian Alaniz. The officers, placed on paid leave, have 19 years of law enforcement experience combined.

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