Portuguese oil company Galp Energia said on Tuesday that Chief Executive Filipe Silva had resigned following a company investigation into an anonymous complaint about an alleged personal relationship between him and a company manager.

Galp Energia SGPS SA Chief Executive Officer Filipe Silva resigned after just two years in the role as the Portuguese oil company conducts a probe into an alleged personal relationship.Most Read from BloombergNYC’s Subway Violence Deters Drive to Bring Workers Back to OfficeDutch Central Bank Restores Amsterdam’s ‘Ugliest Building’Can American Drivers Learn to Love Roundabouts?

Galp Energia (OTCPK:GLPEF) (OTCPK:GLPEY) said Tuesday that CEO Filipe Silva has resigned, days after a Portuguese news website reported the company's ethics committee was investigating an anonymous complaint about an alleged personal relationship between the CEO and a company manager.

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Company statement late on Tuesday cites ‘family reason’ for resignation, while local media has reported of alleged investigation into Silva’s relationships with staff

The resignation comes as Galp's ethics committee probes an anonymous tip about an alleged personal relationship between Filipe Silva and a manager at the company.

Galp Energia's CEO Filipe Silva is under investigation for an alleged personal relationship with a manager, raising concerns about conflict of interest.