BluesBrother : the WT instructions are clear , and were in 2006, that in a place that requires mandatory reporting- the elders report.
The elder sought legal advice from Bethel at the time and was told (by legal counsel) he had no legal obligations under the Illinois law to disclose any information. The Illinois law (735 ILCS 5/8-803) includes clergy penitent privelege which relieves any reporting requirement.
Sec. 8-803 states that
A clergyman or practitioner of any religious denomination accredited by the religious body to which he or she belongs, shall not be compelled to disclose in any court, or to any administrative body or agency, or to any public officer, a confession or admission made to him or her in his or her professional character or as a spiritual advisor in the course of the discipline enjoined by the rules or practices of such religious body or of the religion which he or she professes, nor be compelled to divulge any information which has been obtained by him or her in such professional character or as such spiritual advisor.