Please analyze the situations or problems below and complete required work

1. you are auditing a bank, and someone provides you with an anonymous tip that an employee is embezzling money from the bank. you decide to investigate the allegation.

your interviews with other bank employees confirm that the suspected embezzler has been acting very strange lately. some employees have seen the employee in the bathroom and acting strange in other ways. the bank recently downsized due to poor economic growth, yet the suspect recently bought a new lexus.

based on some helpful hints from bank employees and through your own investigation, you discover that the mortgage taken out by the suspect three years ago for his personal home has recently paid in full.

after calculating the suspects net worth, you determine that he has about $249,000 in income from unknown sources this year alone (and this income is not from selling drugs)

1. what are possible explanations for why the suspect is experiencing emotional changes and has had an increase in unknown income?

2. Can you conclude from these facts that the suspects has indeed been committing fraud?