A retired Aurora police detective who spent 41 years on the job kept 30 boxes of investigative material in his home under his floorboards for years, Chief Todd Chamberlain said in a news conference Thursday.

The chief called the retired detective’s actions “unacceptable” and acknowledged that the records-keeping breach raises “legitimate concerns” about the police department’s processes.

The detective, whom Chamberlain declined to name, kept the materials — which included binders, reports, photographs, VHS tapes, handwritten notes and other documents — in a crawlspace under his home, Chamberlain said in a Thursday news conference .

The chief said the material has been connected to 35 cases. Eric Ross, a spokesman for the 18th Judicial District Attorney’s office, said prosecutors were

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