Global accountancy and professional services firm Deloitte has said that the suicide of a New York accountant was unrelated to work for UK bank Standard Chartered, which has settled with New York regulators over Iran-related transactions.

Daniel Pirron, 57, was found dead of a gunshot on 13 August after a passerby noticed the body in a Fairfield, Connecticut parking space, a Fairfield Police spokeswoman said yesterday, according to Reuters. A .38-calibre handgun, found near his body, was registered to Pirron.

Pirron worked as an accountant in the general counsel's office of Deloitte in New York City.

Standard Chartered on 14 August settled with the New York Department of Financial Services for $340 million after an inquiry into the bank's transactions tied to Iran. That inquiry had questioned work Deloitte had done for the bank. Deloitte has said its work was proper.

"Dan was a highly respected member of our office of general counsel who made many contributions to our firm. However, Dan was not involved in any way on our work for Standard Chartered Bank. Our thoughts are with his family at this very difficult time,” a Deloitte spokesperson was quoted as saying.

In an interview, Daniel Pirron's older brother, Michael, said Daniel had shown no sign he was considering suicide and that the timing of his brother's death raised questions as to whether it was related to work for Deloitte. Michael Pirron said he didn't know specifically the cases his brother was handling for Deloitte. Michael Pirron said his brother was the main financial supporter for two daughters who are approximately 22 and 24 years old. "He loved his work," Michael Pirron said, the news agency reported.