Irzen Octa, a down-on-his-luck Indonesian businessman, suffered a torment familiar to millions of Americans struggling with debts racked up in better times: He feared losing his home.

In the end, he managed to keep the ramshackle two-story house where he and his wife raised their two now-teenage daughters. Instead, Octa, pursued by Citibank over a $5,700 debt on his platinum credit card, lost his life.

The 50-year-old businessman, invited to a Citibank office in Jakarta in late March, collapsed in a tiny room set aside by the U.S. bank for questioning of deadbeat debtors. He died shortly afterward — a casualty of a “harsh interrogation,” said Jakarta police spokesman Baharudin Djafar.

Five people, none of them Citibank employees, have been arrested on suspicion of “group violence” and “mistreatment resulting in death.”

Citibank, Indonesia’s biggest foreign bank, said its internal investigation found no evidence of physical violence.