Security issues at Sharara continue to hamper production at Libya’s most important oil field.

Production has fallen 33% from 300,000 barrels a day (b/d) to 200,000 b/d, according to one Bloomberg source.

Workers at the site complain of armed robberies and a general lack of security, reports The Libya Observer.

Production has been interrupted several times over the past few months, most recently last week, according to Bloomberg.

The National Oil Corporation (NOC), the operator of the site, blamed last week’s production disruption on protestors, Reuters reported.

The field, located in Libay’s Zawiya district, normally produces 270,000 b/d, according to Reuters.