CBS’s ‘60 Minutes’ is undergoing significant changes, with both journalists Cecilia Vega and Sharyn Alfonsi departing the program and longtime executive producer Tanya Simon also leaving the network. PEOPLE confirmed the personnel shifts on Thursday.

The departures mark a substantial shakeup for the veteran newsmagazine, which has been a staple of Sunday evenings for decades. Details regarding the reasons behind the exits have not been officially released by CBS News.

Vega and Alfonsi have been prominent contributors to ‘60 Minutes,’ known for their investigative reporting and interviews. Simon, as executive producer, oversaw the show’s editorial direction and production for a considerable period. Her departure alongside the journalists signals a period of reevaluation and potential restructuring for the program.

CBS News has not yet announced replacements for either Vega, Alfonsi, or Simon. The network is expected to address the changes further in the coming days. The future direction of ‘60 Minutes’ remains to be seen as it navigates this period of transition.