Authorities are investigating a mysterious fire that damaged a Grand Rapids cemetery's mausoleum facility on Friday. A fire broke out inside of the mausoleum at Chapel Hill Memorial Cemetery around 4 p.m., according to Everstory Partners, the owners of the cemetery. Authorities are working with senior leadership at the cemetery to determine the cause of the fire, which at this time is unknown. The extent of the damage is also not known and the cemetery says they will notify the families who were affected by the fire as soon as they are able to determine which crypts were damaged. Authorities have closed the location and isn't allowing anyone in as of 9 p.m. on Friday.