TRENTON (AP) -- The president of a major South Jersey hospital and his wife were killed when a fire broke out in their home, authorities said Sunday.

John Sheridan, President and Chief Executive Officer of The Cooper Health System addresses a gathering in Camden in 2013
John Sheridan, President and Chief Executive Officer of The Cooper Health System addresses a gathering in Camden in 2013 (AP Photo/Mel Evans, File)
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However, the "circumstances surrounding the deaths" of 72-year-old John Sheridan and his 69-year-old wife, Joyce, remain under investigation, Somerset County Prosecutor Geoffrey Soriano said. Authorities also have not said what sparked the fire early Sunday at the couple's home in Montgomery Township.

Soriano said police and firefighters responded to the house shortly before 6:15 a.m. The fire was contained to an upstairs bedroom, where they found the unresponsive couple.

John Sheridan was pronounced dead at the scene. His wife was taken to a hospital, where she died a short time later. Autopsies will be performed to determine what caused their deaths.

John Sheridan was president and CEO of Camden-based Cooper University Health Care.

In a joint statement announcing the Sheridans' deaths, George E. Norcross III, chairman of the hospital's board of trustees, and Adrienne Kirby, president and chief executive officer of Cooper Health System, called Sheridan "incredibly talented, wise and kind - a true gentleman in every sense of the word."

Gov. Chris Christie, on whose transition team John Sheridan had a role, said he was "shocked and deeply saddened" by the Sheridans' deaths. "John was an outstanding public servant, a leader in the healthcare industry and a true New Jersey treasure," Christie said in a statement. "Joyce was an outstanding teacher, wife and mother."

Camden Mayor Dana L. Redd said the couple "will both be profoundly missed by the entire Camden community."

Prior to joining Cooper in 2005, John Sheridan had a long career in state government. He was New Jersey's transportation commissioner in the administration of Gov. Tom Kean. He also worked on the transition team of Gov. Christine Todd Whitman.

Earlier in his career, he had served as deputy attorney general and was a general counsel for the New Jersey Turnpike Authority.

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