A huge flash of blue light was captured in the sky this weekend before parts of the country were hit by widespread power outages.
Dash cam footage captured an intense flash of blue light over parts of Newport, south Wales, shortly after 6pm on Sunday evening.
The incredible sight left people wondering if it had been the result of fireworks being set off on Halloween, or if it was due to a solar flare.
The flash was followed by power outages in parts of Cardiff, Newport, Port Talbot, Carmarthenshire and across south Wales and south west England.
Some people said their lights just flickered on and off but others reported longer outages with street lights remaining down for a time, reports Wales Online.

A spokesperson for Western Power said the reason behind the outage on Sunday was due to "an issue with the National Grid and they are investigating".
A huge flash of light was seen above areas of south Wales last night as the country was hit by widespread power outages.
Dash cam footage captured an intense flash of blue light over parts of Newport shortly after 6pm on Sunday evening.
The incredible sight left people wondering if it had been the result of fireworks being set off on Halloween, or if it was due to a solar flare.

Some people said their lights just flickered on and off but others reported longer outages with street lights remaining down for a time.
A spokesperson for Western Power said the reason behind the outage on Sunday was due to "an issue with the National Grid and they are investigating".

While the reason for the outage in the UK has not yet been confirmed, experts say solar flares can cause issues for power grids as they affect the earth's magnetic field. However, National Grid does not indicate that this was the case over the weekend, simply saying its outage was down to bad weather.
A National Grid spokesperson said: "Severe weather caused minor damage to our Whitson substation in south Wales yesterday evening. No domestic power supplies were directly affected and the National Grid network is operating as normal with no ongoing issues."