Robert “Rex” Baumgartner, an accomplished Toledo police detective sergeant who in retirement was an investigator with the Lucas County prosecutor's senior-protection unit, died Sept. 21 at ProMedica Flower Hospital. He was 86.

He died after suffering congestive heart failure following a bout with what appeared to be a pulmonary disease, his daughter, Debbie Katich, said.

“He was always a hard worker, and he took it upon himself to make sure that the younger officers learned how to do things the right way, always there to answer questions,” said Lucas County Sheriff Mike Navarre, formerly the Toledo police chief and the Oregon police chief.

A longtime detective sergeant, Mr. Baumgartner retired from the Toledo Police Department in 2008 after 43 years, at least 40 of which were with the b

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