Production from the Libyan oilfield, Sara, has fallen by 50,000 barrels per day (b/d), according to the National Oil Corporation (NOC), Reuters reports.

The drop in production has been caused by protests, the news agency reports. The oilfield is operated by the Wintershall, a Germany oil and gas company.

Last week, Reuters reported that protests had reduced production from Wintershall’s oilfields by 40,000 b/d.

The NOC expressed concern that Wintershall had cut production without consulting with the state-run oil company, according to Reuters. Earlier this year, a disagreement between the two firms led to a temporary disruption in production, Reuters previously reported.

Libya’s oil industry has experienced a number of security incidents over the past few months that have slowed the recovery of the industry.