Gardaí say they will be continuing their door-to-door enquiries in Creeslough over the coming weeks.
Garda Grainne Doherty stressed this is a routine part of their investigations into the explosion there on Friday October 14.
“These are routine door-to-door enquiries and we want people to be aware that we will be calling to houses in the area,” Garda Doherty said.
“We have already made this announcement on our social media channels, so please let those who are not on social media know that we will be calling.”
She also confirmed the road is expected to remain closed for another number of weeks and that diversions are in place.