The priest was the subject of a church investigation shortly before his death. The inquiry was dropped after he died, with no report ever being sent to Rome, according to Franceinfo. The outlet also noted that three people had contacted the local bishop's office with information regarding abuse by the priest since July 2018.
https://www.opindia.com/2019/12/france-church-sexual-abuse-teen-charged-murder-pedophile-priest-crucifix-down-throat/
https://www.opindia.com/2019/12/france-church-sexual-abuse-teen-charged-murder-pedophile-priest-crucifix-down-throat/