A fire has erupted at the facility used by U.S. oil services company Schlumberger (NYSE: SLB) at Angola’s oil logistics hub in the capital Luanda, the chairman of state-run oil company Sonangol told a news briefing on Feb. 28.

Schlumberger, the world’s largest oilfield services, is a bellwether for oilfield services and drilling.

A source told Reuters that employees from oil majors BP (NYSE: BP) and Total (NYSE: TOT) were also evacuated from the area.

“There is a large fire at the Schlumberger facility in Sonils,” Carlos Saturnino said when presenting the company’s financial results and oil production.

“We don’t know much more at present, but should have more information by this afternoon.”

The extent of the fire could not be independently verified by Reuters.

In January, Schlumberger reported a net loss of $1.51 billion, down from $1.69 billion in 2016.