An American businessman has checked out of the luxury Four Seasons hotel in Dublin leaving a $100,000 tab behind him.

Tony Geller, the manager of the European Safety Data Vault (ESDV) project, left the five-star hotel last week without paying his check or leaving a forwarding address.

Geller had been based in the hotel for more than a year and had previously been considered a good customer.

The head of ESDV’s American parent company, Ricardo Martinez, said he was unaware of any issues with the Irish division.

The parent company, Safety Intelligence Systems, is based in New York.

The company makes black-box technology for cars and is already used in about 1.5m vehicles in America.

The car black-boxes are similar to the aircraft versions and can tell investigators how fast a car was traveling.