UNSMIL said in a statement on Sunday that it was deeply concerned at a series of serious incidents which have taken place in the last few days in and around Tripoli.
UNSMIL indicated that it was very concerned at the report of the kidnapping of the High Council of State's member Mohammed Abu Gmaja from Qasir Benghashir in southern Tripoli.
The UN mission also voiced concern regarding the airstrike on Rexos compound in Tripoli, a civilian facility located in a high populated area that has been used by members of the House of Representatives for meetings.
"Shelling civilian targets and the kidnapping of civilians including political actors sends a worryingly anti-democratic message." The statement reads.
It adds that the reported two attacks against ambulances carrying medical staff causing the death of two health workers and injury to others are of serious concern.
"Medical facilities and personnel are strictly protected under IHL and these attacks could constitute war crimes." UNSMIL remarked.
The mission said it was working with Libyan parties on the ground to acquire the evidence necessary to prosecute all of those proved to have been involved in these violations and all other incidents against the civilian population and civilian infrastructure.
UNSMIL urged once again for all persons who are arbitrarily detained and abducted to be immediately released.
It reminded all Libyan parties to the conflict of their obligations under the International Humanitarian Law and the International Human Rights Law.