The blaze ripped through 3 Degrees hair salon on n Redforge Road in Blackpool in the early hours of September 18th.
Gardaí launched an investigation and appealed for witnesses following the fire which occurred at around 2.40am on September 18th.
This morning a man in his 20s was arrested in relation to the fire.
He's currently being detained at Mayfield Garda Station under Section 4 of the Criminal Justice Act.
Gardaí are appealing to anyone with any information in relation to this incident to contact Mayfield Garda Station 021 4558260, the Garda Confidential Line or any Garda Station.
