Detective Cesar 'Echy' Echaverry, 29, a five-year veteran of the Miami-Dade Police Department, was shot in the head by a robber on Monday On Wednesday the police announced that Echaverry had died from his injuries: the gunman, Jeremy Horton, was shot dead by police during the incident On Thursday a Miami firefighter, Kevin Newcomb, ranted online about Echaverry's death and mocked police for being against gun control and vaccines Fire Chief Joseph Zahralban said Newcomb has been relieved of duty while his comments are investigated