San Bernardino County Sheriff John McMahon announced Friday, June 18, that he will retire on July 16.
McMahon, who has been sheriff since 2012, made a public announcement in a video posted on Twitter.
“For the last 36 years, I’ve been blessed to work with some of the most dedicated and hard-working law enforcement professionals,” said McMahon, who began his career in 1985 as a patrol deputy in the Needles station. “The eight and a half years serving as your sheriff has been an honor and a privilege.”
John McMahon is sworn in by his wife Michelle as the new San Bernardino County Sheriff at the San Bernardino County Government Center on Wednesday, Jan. 9, 2013. (File photo by Stan Lim, The Press-Enterprise/SCNG)
San Bernardino County Sheriff John McMahon and U.S. Congressman Pete Aguilar (D-San Bernardino) watch four deputies get honored with the Congressional Badge of Bravery award during a ceremony at San Bernardino County Sheriff’s Department Headquarters in San Bernardino on Tuesday, Sept. 22, 2015. (File photo by Rachel Luna, The Sun, SCNG)
Newly-appointed San Bernardino County Sheriff John McMahon says the Pledge of Allegiance with his wife Michelle during the start of his swearing-in ceremony at the San Bernardino County Government Center on Wednesday, Jan. 9, 2013. (File photo by Stan Lim, The Press-Enterprise/SCNG)
San Bernardino County Sheriff John McMahon speaks about the manhunt for Christopher Jordan Dorner Friday, Feb. 8, 2013, near Bear Mountain in Big Bear. The search has been hampered as a heavy winter storm has hit the area. (File photo by Will Lester, Inland Valley Daily Bulletin/SCNG)
San Bernardino County Sheriff John McMahon speaks about the manhunt for Christopher Jordan Dorner Friday, Feb. 8, 2013, near Bear Mountain in Big Bear. (File photo by Will Lester, Inland Valley Daily Bulletin/SCNG)
San Bernardino County Sheriff John McMahon gives a Eulogy during the funeral service for Det. Jeremiah MacKay on Thursday, Feb. 21, 2013, at the San Manuel Amphitheater in Glen Helen. (File photo by Stan Lim, The Press-Enterprise/SCNG)
San Bernardino Sheriff John McMahon takes a knee as he speaks to 6-year-old step-daughter Kaitlyn, as he presents the flag to Lynette the wife of fallen San Bernardino Sheriff’s Det. Jeremiah MacKay during his funeral at San Manuel Amphitheater in Glen Helen on Thursday, Feb. 21, 2013. (File photo by Kurt Miller, The Press-Enterprise/SCNG)
San Bernardino County Sheriff John McMahon, left, looks on as detectives investigate a scene off of Quarry Road, near the 15 Freeway in the desert north of Victorville Wednesday morning, Nov. 13, 2013, after multiple skeletal remains were found. (File photo by Will Lester, Inland Valley Daily Bulletin/SCNG)
San Bernardino County Sheriff John McMahon address the media out in front of Loma Linda Hospital, where two officers were taken after a shootout with ex-LAPD Christopher Dorner, Tuesday, Feb. 12, 2013. (File photo by John Valenzuela, The Sun/SCNG)
San Bernardino County Sheriff John McMahon speaks about the suspect Christopher Brandon Lee, 24 of Anchorage, Alaska and the killing of victim Erin Corwin during a press conference at the San Bernardino County Sheriff’s Headquarters Monday in San Bernardino Aug. 18, 2014. (File photo by Terry Pierson, The Press-Enterprise/SCNG)
San Bernardino Sheriff John McMahon speaks to the media at the SBC Sheriff’s headquarters, about the use of force regarding the horse thief, on Friday, April 10, 2015. (File photo by Kurt Miller, The Press-Enterprise/SCNG)
San Bernardino Sheriff John McMahon fields a question about the mass shooting in San Bernardino during a press conference on Friday, Dec. 4, 2015. (File photo by Kurt Miller, The Press-Enterprise/SCNG)
San Bernardino Sheriff John McMahon, with a photo of fallen deputy Jeremiah MacKay at the right, speaks during a press conference at the SBSO on Wednesday, Feb. 13, 2013. (File photo by Kurt Miller, The Press-Enterprise/SCNG)
San Bernardino County Sheriff John McMahon speaks during a press conference about the search for former LA police officer Christopher Dorner in the woods near Big Bear Resort and Snow Summit in Big Bear Thursday, Feb. 7, 2013. (File photo by Terry Pierson, The Press-Enterprise/SCNG)
San Bernardino County Sheriff John McMahon speaks during a press conference about the search for former LA police officer Christopher Dorner in the woods near Big Bear Resort and Snow Summit in Big Bear Thursday, Feb. 7, 2013. (File photo by Terry Pierson, The Press-Enterprise/SCNG)
San Bernardino County Sheriff John McMahon speaks during a sit-down interview at the San Bernardino Sheriff’s Department Headquarters in San Bernardino on Tuesday, March 19, 2013. (File photo by Rachel Luna, The Sun/SCNG)
San Bernardino County Sheriff John McMahon speaks to the media Friday, April 10, 2015, about deputies involved in the apparent beating, tasing, and arrest of Francis Jared Pusok while being taken into custody. Pusok attempted to elude authorities in the California desert on a stolen horse. (File photo by Rick Sforza, The Sun/SCNG)
McMahon, then the undersheriff, was appointed by the Board of Supervisors in December 2012 to replace Rod Hoops. McMahon won election in 2014 and re-election, unopposed, in 2018.