An unidentified armed group on Tuesday released a judge, a prosecutor and two policemen after kidnapping them two days ago in the Libyan city of Jufra, some 650 km southeast of the capital Tripoli.

"The judge of Weddan court, Abdussalam Mohamed Sunusi Ismail, prosecutor Ali Ismail Abdurrahman, policemen Al-Tahel Hammu and Ahmad Younis, were released after being kidnapped by an armed group and taken to Sirte city," a parliament member posted on his Facebook page.

"They were unconditionally handed over to the commander of 128 Infantry Battalion, Hassan Zadma," said Ismail Al-Sharif, member of the eastern-based House of Representatives.

Al-Sharif thanked the people and officials of Jufra and the security forces of Sirte city for their "direct and practical dealing with this crisis."

On Sunday, the judicial police of the Ministry of Justice condemned the kidnapping of the four officials, saying that the kidnapping "aimed at freeing detainees accused of smuggling fuel."

Libya has been suffering insecurity and chaos since the 2011 uprising that toppled former leader Gaddafi's regime. The North African nation has been plagued with political division and unrest.