British oil and gas explorer Ophir Energy’s COO William Higgs will step down as the company reduces costs by cutting staff positions at its London headquarters, the company said on July 7.

Energy companies have cut costs over the past few years due to a fall in oil prices. Ophir has faced further challenges in launching its Fortuna project in Equatorial Guinea—Africa’s first deepwater floating liquefaction facility.

“The company has no plans to appoint another chief operating officer or executive director [and] a further announcement will be made shortly,” Ophir said in a brief statement after markets closed July 7.

A spokesperson for the company, which has projects in Africa and East Asia, declined to say when Higgs would leave the company and what other staff cuts were being made.

Higgs, who did not immediately respond to a request for comment via LinkedIn, was appointed COO in 2014, having previously worked for Chevron Corp.

Ophir also has offices in eight other cities and employed 288 people at the end of December last year.

Ophir’s shares, which closed down 4.5% at 79 pence on July 7, have lost nearly 14% since April 2016, when Schlumberger ended talks to help delivery of Fortuna.

Ophir said in May it planned to borrow $1.2 billion from Chinese banks to back the development of Fortuna, which is estimated to have production capacity of 2.2 million tonnes per year and a start-up in 2020.

The company is due to give a trading update on July 12.