On 11 September, a suspected attack by ISIS targeting Tripoli’s downtown area failed to occur following the distribution of a letter addressed to the National Oil Corporation (NOC) expressing concern over the possibility of an attack.

On 5 September, Sirte Security forces arrested four individuals for allegedly assisting ISIS in the second residential district of Sirte. On 31 August, ISIS fighters were detected moving through Garabuli after having supposedly arrived from the sea.

On 29 August, the UN published a report outlining the UN Secretary General’s overview of the Libyan crisis as presented to the UN Security Council on 26 August. The report claimed there “was a significant increase in the number of attacks by Islamic State in Iraq and the Levant (ISIL) in southern Libya” following the LNA’s assault on Tripoli in April.

On 27 August, unconfirmed reports claim the LNA killed an alleged ISIS member fighting on the front lines in southern Tripoli. On 15 August, unconfirmed reports suggest ISIS militants attacked a checkpoint in Bawbat al-Souda in the Jufra region. On 18 August, the LNA’s spokesperson, claimed ISIS members are amongst the opposition forces it is fighting in Murzuq.

On 18 August, the Internal Security Agency in Ajdabiya arrested suspected terrorist Issa al-Shaghri (aka Issa Kaba) upon his return to the city to allegedly plan terror operations.

On 6 August, the Misrata Counter-Terrorism force arrested two suspected Islamic State (ISIS) operatives, Ismail Omran and Hatem Ismal Thuraya, in Sirte.