Production resumed at Libya’s Sharara oilfield Wednesday, according to the field’s operator, Reuters reports.

Sharara had been closed since Sunday after an armed group, Brigade 30, suspended operations at the field, Reuters had previously reported.

On Monday, the Chairman of the National Oil Corporation (NOC) indicated that the field would reopen on Tuesday, Bloomberg reported.

The group used the closure of the field to advance a number of demands, a source told Bloomberg.

Sharara is the largest oilfield in Libya and had been producing over 230,000 barrels a day prior to this latest disruption, according to Bloomberg.

Due to poor security, Libya’s oil industry has suffered a series of disruptions that have reduced production over the past couple months.