
According to a police report obtained by TMZ, a witness claims she saw Cathy driving a silver Chrysler on I-495 last month ... when she rear-ended the Volvo (right), and then left the scene.
Law enforcement sources tell us ... officers tracked down Moriarty and went to her home -- where they saw that her silver Chrysler (left) had front damage that synced up with the accident ... but Cathy denied any involvement in the crash.
Calls to Moriarty's manager have not been returned.













