my son committed suicide Jan 10, 2015 in Tennessee. His body was brought back to Illinois and buried Jan.22,2015. A certificate of death was sent . It stated pending investigation. No cause of death was stated. The insurance company states they need this information to process the claim since it was well pass the 2 yr. clause .After contacting Tennessee Vital Records I was told it could take up to 6 months for the coroner to complete this report. This seems an awful long time to finalize the death certificate. Please advise me of my next step. Whom should I contact in Tennessee? HELP