MOSCOW (Reuters) - The&nbsp;death&nbsp;toll&nbsp;from&nbsp;an explosion and fire at a&nbsp;fuel&nbsp;depot&nbsp;in Nagorno-Karabakh&nbsp;has risen to&nbsp;170, Armenpress news agency reported on Friday citing local officials in the breakaway region.
The&nbsp;blast&nbsp;occurred as thousands of ethnic Armenians fled the breakaway enclave after their fighters were defeated by Azerbaijan in a lightning military operation.
The authorities have not given any explanation of the cause of the&nbsp;blast.
The number of victims rose sharply&nbsp;from&nbsp;an earlier announcement by&nbsp;Karabakh&nbsp;authorities reporting 68 dead on Tuesday evening.
Rescue work at the&nbsp;blast&nbsp;site continues.
As of Friday morning, more than 84,700 of the 120,000 ethnic Armenians who call Nagorno-Karabakh&nbsp;home had already crossed into Armenia.
&nbsp;
(Reporting by Maxim Rodionov; editing by Guy Faulconbridge)

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Death toll from fuel depot blast in Karabakh rises to 170 - media