World Bulletin / News Desk
In a letter to the interior minister's office, al-Thinni said the decision to allow Omar al-Sanki back to work was "unlawful."
He added in his letter that, if the minister returned to work, all his financial and administrative decisions would be illegal.
Al-Thinni also said he would penalize anyone who carried out al-Sanki's ministerial decisions.
Al-Thinni had previously ordered al-Sanki's suspension, reiterating on Wednesday that the decision remained in effect.
Libya's Tobruk-based parliament ordered al-Sanki to return to work on Sunday after he was cleared of charges leveled against him.
Parliamentary investigators wrote to al-Thinni and informed him that they had decided to allow the suspended minister to return to work after investigating charges against him.
Al-Sanki had been accused of making remarks in the media critical of the parliament-backed army, MP Tarek al-Garoushi told.Güncelleme Tarihi: 18 Mart 2015, 16:05