Senior executives at construction giant Leighton reportedly exchanged emails lamenting a history of misbehaviour in its offshore businesses.

A leaked email reportedly shows two top executives referring to a “disgusting history of incompetence and misbehaviour” and improper “rewards, special bonuses, travel rorts” in its overseas operations, Fairfax Media reports. Other emails show senior Leighton staff looked at ways to hide a $24 million corrupt payment in Iraq by…