The U.K. Serious Fraud Office confirmed that it has opened an investigation into the activities of engineering and construction company KBR for suspected bribery and corruption offenses.

“This investigation is related to the SFO’s ongoing investigation into the activities of Unaoil,” the agency said a statement issued April 28. The investigation concerns the activities of KBR’s U.K. subsidiaries, their officers, employees, and agents, the agency said.

The SFO made the announcement following KBR’s latest quarterly report, in which the company disclosed that it is being investigated by the Department of Justice, Securities and Exchange Commission, and SFO in relation to Unaoil. “KBR is cooperating with the DOJ, SEC, and the SFO in their investigations, which includes the voluntary submission of information and compliance with formal document requests, including a subpoena from the SEC and a Section 2 notice from the SFO,” the company stated.

KBR first disclosed in April 2016 that it was being investigated by the Department of Justice for suspected bribery and corruption offenses related to Unaoil.