By Dailymail.com Reporter
Published: 05:20 BST, 23 May 2019 | Updated: 05:21 BST, 23 May 2019
Shocking footage shows the moment that a man said to be mentally disabled was shot by a plainclothes officer in Philadelphia.
Joel Johnson, 28, was walking between several cars on Monday night at approximately 8.50pm when the shooting occurred.
Video shows Johnson walk up to the detective's vehicle and in the next moment, several shots are fired and the man falls to the ground.