CAMDEN, N.J. (CBS) — Camden’s Charter School Network in Camden County, New Jersey joins family and friends in mourning the loss of media mogul and KATZ Academy founder Lewis Katz, and KATZ Academy Board of Trustees president Marcy Dalsey, who were killed in a fiery plane crash in Massachusetts.

“It is with deepest sadness that Camden’s Charter School Network announces the passing of Lewis Katz and Marcy Dalsey in a tragic plane accident. Lewis Katz was the founder and benefactor of KATZ Academy Charter School, supporting the children of Camden with his passion, time and donations. Marcy Dalsey, KATZ Board President, was the tireless energy, vision and effort behind the founding and running of the school. These dearly departed will be truly missed for their work and their true friendship. Words cannot express the measure of what they have done for Camden and our children. Our heartfelt sympathies are extended to family and friends during this difficult time.”