Shortly before 9am this morning loud bang was heard in the town, but there was no obvious explanation.
Police said it was not a police incident, but have had a few inquires about the sound.
RAF Shawbury have said the loud noise was nothing to do with them.
Back in November thousands of people in Shropshire were rudely awoken by a "sonic boom".
The cause of the noise was again a mystery with many at the time speculating it may have been caused by a Eurofighter plane.
Fighter jets operate in the county from airbases in the region and the mysterious explosion follows another episode in 2008, which was also blamed on a Eurofighter breaking the sound barrier.
Ministry of Defence spokesman said in November it was "highly unlikely" that one of its planes had caused a sonic boom.
A spokesman for RAF Shawbury also said it had no aircraft capable of breaking the sound barrier, although there were other airbases in the region.