The Washington Post’s online news is running this Reuters report about a fire in a Saudi prison. There’s lots of speculation that the fire could be the result of unrest in the prison, but there’s very little factual information provided, probably as a result of this being a first report. I’ll be watching for more detailed reporting…

Seven Saudis die in jail fire after possible protest

RIYADH (Reuters) - Seven inmates died in a fire at a Saudi prison in a minority Shi’ite region, but Shi’ite opposition and government sources gave different accounts on Monday of the incident.

Rasid.com said the seven died after setting fire to mattresses inside cells to protest over conditions at the al-Ahsa prison in the Eastern Province late on Sunday.

Citing medical sources, it said dozens were hospitalized.

Saudi prisons chief Ali al-Harithy was quoted by the official news agency SPA as saying the seven died “because of a dispute between some of them.”
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UPDATE: Gulf News carries a report with a bit more information, but still not a lot of detail.