Mo. Rev. Stat. § 590.075

The chief executive officer of each law enforcement agency shall, prior to commissioning any peace officer, request a certified copy from the director of all notifications received pursuant to section 590.070 and the director shall provide all notifications stored electronically to the chief executive officer who requested the notifications within three business days after receipt of request. If the director receives any additional notifications regarding the candidate for commissioning within sixty days of a chief executive officer's request under this section, a copy of such notifications shall be forwarded by the director to the requesting chief executive officer within three business days following receipt.