Oilfield services provider Petrofac has suspended COO Marwan Chedid until further notice after Britain’s Serious Fraud Office (SFO) questioned him as part of an investigation into Monaco-based Unaoil.

The SFO launched a criminal investigation into Unaoil, its officers, employees and agents in July 2016 in connection with suspected bribery, corruption and money laundering.

As part of its investigation, the SFO questioned Petrofac CEO Ayman Asfari and Chedid under caution and released them without charge.

Petrofac said in a statement on May 25 that Asfari would continue in his role and a separate committee would be responsible for the company's engagement with the SFO.

Petrofac used Unaoil, an energy services firm, to provide local consultancy services in Kazakhstan between 2002 and 2009.