(CBS) — The funeral service was held Saturday for a Cook County Sheriff’s investigator who was shot to death last week while off-duty and trying to protect his family.

WBBM’s Mike Krauser reports officers in dress uniform lined State Street saluting as the funeral procession carrying the body of Cuauhtemoc Estrada arrived at Holy Name Cathedral.

A cold wind blew up the street as the pipes and drums of the Chicago Police Emerald Society added to the already somber tone.

As the flag-draped casket was being removed from the hearse, the street full of people was absolutely silent, except for the rumbling of the train of the State Street subway below covering up the bells of the old cathedral.

“He touched so many people’s lives that it was just amazing. Everybody wanted to be here for him,” said Cook County Sheriff Tom Dart. “He served everybody from the beginning of time until the end, where he was trying to save his daughter.”

Aside from numerous sheriff’s police colleagues, there were officers from other departments including Bellwood, where the 50-year-old investigator was shot to death while reaching for his gun to prevent the attempted armed robbery of his daughter and her boyfriend as they unloaded food from a car for a family Christmas party.

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