In one of the case studies in the textbook, Marcus Lane, a geologist for an environmental management and engineering services firm, traveled all over North and South America as part of his job, resulting in numerous expense reimbursements. Unfortunately, Lane went too far and began to double book his air travel using his personal credit card. He booked two separate flights to the same location, but with a huge cost difference. He used the cheaper ticket for the actual flight and returned the more expensive ticket for credit. And, of course, he submitted the more expensive ticket for reimbursement. How was his scheme detected

The internal auditor discovered it when performing a routine audit of expense reimbursements

Explanation:

Marcus Lane, was a geologist who travelled all over North America and South America and this results in several expense reimbursements. Lane engaged in fraudulent activity by double booking his air travel.

He used cheaper ticket for the actual flight and more expensive ticket was returned for credit. But, he submitted the expensive ticket for reimbursement.

The fraud was discovered by the internal auditor while doing a routine audit of expense reimbursements. He was terminated and he agreed to pay the money back.

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