Investigators at German financial watchdog Bafin have not discovered any signs of systemic efforts to manipulate currency benchmarks, rather, only individual efforts, banking supervisory head Raimund Roeseler said in a newspaper interview on Tuesday.

In addition, Bafin is preparing to close its gold probe after not uncovering any signs of attempted benchmark price manipulation, Roeseler told daily Handelsblatt.

“We don’t have the impression that there was a system behind the (currency) manipulation. Rather, it was simply the greed of individuals or groups in the most diverse places,” he said.