Saudi Arabia, Egypt, the United Arab Emirates and Bahrain on Monday added nine entities and nine individuals to a blacklist because of alleged links to Qatar over terrorism, Reuters reported, citing the Saudi state news agency SPA.
The four Arab states severed relations with Qatar in June over allegations that it supports terrorism. Qatar denies the charges.
They have already put dozens of figures linked to the country on blacklists, including Egyptian cleric Yusuf al-Qaradawi, one of the spiritual leaders of the Muslim Brotherhood.
The new entrants on the ban lists include entities from Libya and Yemen and individuals from Qatar, Yemen and Kuwait who the Arab states say have direct and indirect links to Qatari authorities, SPA reported.
The countries accused some of the individuals named with roles in raising funds to support Al-Nusra Front jihadists and other militia groups in Syria, while others were said to have contributed to and supported Al-Qaeda.
The rift between Qatar and its neighbors is widely believed to have been caused by comments published by the Qatar News Agency attributed to the Qatari emir.
In those comments, al-Thani allegedly described Iran as an "Islamic power", criticized U.S. President Donald Trump's policy towards Tehran and claimed his country’s relations with Israel were good.
Qatar insists that its news agency was hacked by the United Arab Emirates.