Mayor Lori Lightfoot fired police Superintendent Eddie Johnson effective immediately Monday for intentionally misleading her and the public about his conduct when he was found asleep in his running vehicle at a stop sign after a late weeknight out in October.

“This moment needs to be a turning point for the Chicago Police Department and the way things are done in this city,” said Lightfoot, emphasizing that a “culture change” must take place.

The stunning announcement came just weeks after Lightfoot held what she referred to Monday as “a celebratory press conference” to announce Johnson’s retirement by year’s end after about 3½ years at the helm.

Former Los Angeles police Chief Charlie Beck, previously named Johnson’s interim successor, took control of the beleaguered department after flying into Chicago on Monday afternoon. He and the mayor separately met with the department’s top brass