Police say Stephanie Parente's father killed his family and himself in a Baltimore hotel Monday.

Some investors fear their entire life savings have been wiped out, said the source, who based the $20 million amount on knowledge of Parente's finances.

Some other investors are missing what could amount to another $7 million, CNN has learned, so the total of missing money tied to Parente could be upwards of $27 million.

The FBI has opened an investigation into the William Parente's financial dealings after numerous complaints from investors to Baltimore County police.

Baltimore County police disclose William Parente killed his wife and two daughters by "blunt force trauma and asphyxiation" at a Towson, Md., hotel before committing suicide. Police said he cut himself and bled to death in the bathroom of his room on the 10th floor.