New Jersey Gov.-elect Mikie Sherrill plans to replace Col. Patrick J. Callahan as superintendent of the State Police.

As a result, Callahan said he plans to retire at the end of the year.

“This morning, I will announce my retirement after 31 years of dedicated service in law enforcement as I will not be renominated to this position by the incoming administration,” Callahan said in a statement. “Transitions in leadership are part of public service. And they are essential to our system of government. I offer my full support to the incoming administration and to the dedicated personnel, both civilian and enlisted, who will continue to serve in so many ways.”

A spokesman for Sherrill couldn’t immediately be reached Monday morning.

Gov. Phil Murphy praised Callahan, who sat by his side

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