Libyan demonstrators have forced a major oil terminal in the east of the country to halt operations for four days in a row, the deputy oil minister said on Wednesday.

"The management of the Zueitina oil terminal and harbour decided to shut down operations on Saturday to avoid any risk," Omar Shakmak told AFP.

He said the decision was made after protesters demanding jobs and health benefits entered the terminal and pressured a manager to stop operations.

Demonstrations continued on Wednesday drawing up to 120 people, he said.

"We have no losses other than production," Mr. Shakmak added, noting that Zueitina pumps roughly 60,000 barrels of crude per day.

Analysts estimate 20% of Libyan oil exports depart from the port.

Oil installations have become a focal point of protests in the wake of July polls that ushered in the country's first elected authorities.

Mr. Shakmak condemned the use of "oil operations and terminals to pressure the government."