Pembroke Dock new year firework sparks blaze in three homes
Investigators say a New Year's Eve firework is probably responsible for a blaze that spread to three houses at Pembroke Dock in Pembrokeshire.
Twenty-five firefighters spent more than two hours tackling the blaze after they were called to Wellington Street at 00:15 GMT on New Year's Day.
It is understood that the fire began in the roof space of one of the terraced properties, before spreading to the two neighbouring houses.
No-one was injured in the incident.
Senior fire officer Rob Bellerby said a witness saw a smouldering rocket land in the eaves of a house just before the blaze began.
Due that account and the timing of the fire just after midnight, their "strong suspicion" is that a firework started the blaze.
The residents were out at the time.
The firefighters were able to contain the fire in the roofspace although there was heat and smoke damage.
He said it could have developed into a much more serious incident.