BOSTON (CBS) – A Boston cab driver is being praised for his upstanding character after police say he did the right thing and turned in a huge sum of money left in his backseat.

Police say Raymond “Buzzy” MacCausland picked up his passenger near Mass. Ave and Tremont Street Friday afternoon. After dropping him off, the driver realized the homeless rider left his backpack behind.

READ MORE: Red Line Train Derails At Broadway MBTA Station

While looking for an ID, MacCausland discovered there was cash inside the bag. His next move was to bring the backpack and cash to Boston Police headquarters where and he and police discovered $187,000 inside.

The cash found by a Boston cab driver (Image credit Boston police)

The cash found by a Boston cab driver (Image credit Boston police)

“The heart started bumping because with this man, you wouldn’t think he had five dollars in his pocket, never mind a bundle like this,” MacCausland said.

READ MORE: Andrea Campbell Seeking Commitments Before Endorsing Mayoral Candidate

Soon after, police found paperwork in the bag showing that it was the man’s inheritance. He came down to the station, proved the cash was his, and gave MacCausland a $100 reward.

“This hackney driver exhibited exemplary behavior and his honest deed should be recognized,” Boston Police Commissioner William Evans said in a statement. “His actions represent the high standards that our department has for our drivers.”

“I think I did the right thing,” MacCausland said.

MORE NEWS: Inspired By Mother, NH Teacher Running Virtual Boston Marathon For Stepping Strong Center

WBZ-TV’s Louisa Moller contributed to this report.