Jeff Shell in a blue shirt, outdoors.
NBCUniversal CEO Jeff Shell is stepping down immediately.
  • NBCUniversal CEO Jeff Shell is leaving the company over an inappropriate relationship with an employee.
  • The company announced the result of an investigation into a complaint of inappropriate conduct Sunday.
  • Shell has been with the company for nearly two decades.

The CEO of NBCUniversal, Jeff Shell, is stepping down immediately following an investigation into a complaint of inappropriate conduct, Comcast announced Sunday.

"Today is my last day as CEO of NBCUniversal," Shell said in a two-paragraph statement.