The action is the fourth time Asic has moved against Macquarie Group over the last year.
Financial problems at Rex Airlines come after the collapse of low cost carrier Bonza in April.
The companies continue to be in dispute over plumbing leaks installed by the builder using Fletcher products.
Investigations are continuing into the affair, and senior executives including the chief executive will be under scrutiny.
As Kiwi regulators probe trading in Warehouse shares ahead of a takeover offer, their Australian counterpart is talking tough on leaks and insider trading.
The move comes after the bank initiated two internal inquiries into the affair last week.
Weak demand for EVs and a glut of Indonesian nickel has made BHP’s operations unviable.
The bank reacted to reports of an ASIC probe by mandating two law firms to look at the division's culture.
It has been a busy day for the automotive aftermarket supplier, which has also announced a new CEO and chair.
Banks are reducing their presence in the region due to cost and risk, says the ANZ chief.