Police used a robot to kill Dallas shooter Micah Xavier Johnson, in what is thought to be a first in US history.
The incident is believed to be the first time police have used a robotic system in a deliberately lethal manner.
The robot, which is usually used for bomb disposal, was deployed to take down the shooter who murdered five police officers in Dallas last week.
The Remotec Andros F5 robot was sent into the garage containing 25-year-old Johnson on Thursday 7 July 2016, after he opened fire on police during a peaceful protest.
Several hours of negotiations had failed when the Dallas Police Department (DPD) deployed the robot, which was fitted with an explosive device on its arm.
The robot, which killed a gunman in Dallas, is usually used for bomb disposal. Photograph by Sgt. J.P. Lawrence, courtesy of DVIDS "We saw no other option but to use our bomb robot and place a device on its extension for it to detonate where the subject was," Dallas Police chief David Brown said at a news conference the next morning. "Other options would have exposed our officers to grave danger."

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Although similar devices have been used in police operations, none were used to injure or kill a suspect, and until recently, repurposed bomb-disposal robots have been limited to the military.
Peter Singer ? a senior fellow at the New America Founda...