The German bishops began discussing plans for the gathering in September 2018 after they published a study that revealed an estimated 3,700 cases of sexual abuse had been reported in the German church from 1946 to 2014.
Archbishop Bernard Hebda said in a statement posted on the archdiocese’s website that the investigation targets Bishop Michael Hoeppner of the Crookston diocese.
At least 10 people were killed, two of them foreign nationals, in a wave of riots and xenophobic attacks that began in late August in Pretoria and spread to nearby Johannesburg.
The property has an appraised value of $8.4 million, according to the King County Department of Assessments.
The bishops are retired Bishop Joseph H. Hart of Cheyenne, Wyoming, and now-deceased Bishop Joseph V. Sullivan of Baton Rouge, Louisiana.
Bishop Malone has faced questions about how he has handled allegations of abuse against diocesan priests for more than a year.