DUBAI, United Arab Emirates (AP) — Incendiary statements about Iran and Israel posted on Qatar's state-run news agency that authorities blamed on hackers sparked a regional dispute Wednesday, with the United Arab Emirates and Saudi Arabia blocking Qatari media including Al-Jazeera.

The alleged hack and purported fake news exposed real tensions still lingering in the Gulf between Qatar and other nations over the small gas-rich country's support of Islamist groups.

While Qatar quickly denied the comments attributed to ruling emir Sheikh Tamim bin Hamad Al Thani, Saudi-owned satellite channels re...