Libya's Alwasat is also reporting that a 15-year-old boy from Tripoli was one of the suicide bombers used by the IS group to attack the oil port of Sidra on January 4.
Ageila Saleh, who represents Libya's internationally recognized government, has condemned the attacks by the IS group on Libya's oil terminal of Sidra.
The latest IS propaganda video in which London-born militant Siddhartha Dhar is thought to appear has turned attention to a banned Islamist group -- al-Muhajiroun -- to which Dhar formerly belonged.
Reuters has given a profile of al-Muhajiroun, which was banned in the UK in 2010 under anti-terrorist legislation.
The group was founded by Syrian-born Islamist cleric Omar Bakri in the late 1990s and called for Sharia law in Britain.
Its leaders have maintained that they do not support violence, acting under a "covenant of security" that requires Muslims in non-Muslim countries to submit to the authorities.
The group gained media notoriety in Britain after the Sept. 11, 2001 attacks on the United States for issuing leaflets that referred to the hijackers as "the Magnificent 19".
It held regular meetings in community centers in east London and would often stage demonstrations outside the prime minister's office in Downing Street calling for all governments to operate under a strict form of Islamic law.
Libyan political activist Adel al-Hassi has called on Libya's factions to unite in the face of attacks from the IS group.
Libya's Petroleum Facilities Guard spokesman says that the is coordinating with the Chief of Staff of Libya's General National Congress (GNC) for a wider military operation to defeat the IS group.
Hassi says that the PFG is willing to cooperate with any faction in Libya that is willing to help it defeat IS.
Ali al-Hassi, the spokesman for Libya's Petroleum Facilities Guard (PFG), the armed group that protects Libya's national oil facilities, has said that the IS group's fighting lines have been broken but they are trying to regroup.
IS attacked Libya's oil crescent including the oil terminal Sidra on January 4 and 5.
Idriss al-Maghrebi of Libya's House of Representatives, has called on the international community to "assume its responsibilities" towards the oil terminal of Sidra, which has been under attack from the IS group since January 4.
The House of Representatives, one of Libya's main political factions, fled to the eastern city of Tobruk in summer 2014 after being forced from Tripoli. Both it and its rival General National Congress have described themselves as Libya's legitimate governments.
Libya's warring factions signed a UN-brokered peace deal in December to form a national unity government.
More reports are emerging that one of the IS car suicide bombers involved in the attack on the Libyan oil port of Sidra on January 4 was a 15-year-old boy from Tripoli.
Libyan journalist Ali Al-Rahqan has posted on Facebook what he says are details of one of the car suicide bombers used by the IS group on January 4 in an attack on the oil terminal of Sidra.
Al-Rahqan claims the suicide bomber was a 15-year-old boy named Abdel Moneim Dwilla, originally from Tripoli.
According to Al-Rahqan, Abdel Moneim's family said the boy had become more religious, telling his mother that he was going to pray at a different mosque because his usual mosque belonged to a Sufi and was therefore "haram" or forbidden for him.
After some time, Abdel Moneim disappeared and his family thought that he had been abducted. But a day or so later, his father was contacted from a strange number and informed that his son was "in the land of the Caliphate," in other words in IS-controlled Sirte.
The IS group in Raqqa hijacked the Facebook account of a female activist it murdered in order to trap other anti-IS activists, The Independent writes.
IS is thought to have killed Ruqia Hassan Mohammed in September after abducting her in Raqqa in July.
But a citizen journalist from the Raqqa Is Being Slaughtered Silently group claims IS kept her Facebook account open "in order to entrap friends who communicated with her."