FOUR huge bangs startled Llangollen residents in the early hours of Sunday and Monday.
The mystery noises, described as sounding like explosions, first occurred around 3.20am on Sunday.
The first two came in quick succession, followed by another 10 minutes later. The fourth happened at 1am on Monday.
Samantha Wood, 19, from Birch Hill, said the noise woke her up.
'It sounded close but it was very loud so it was difficult to tell,' she said.
'I must have been woken up by the early ones because I only remember hearing one around 3.30am. 'It was definitely not thunder or anything like that. It was more like a bang, like an explosion.'
Lyndsey Knibbs, who runs the Oakmere Guesthouse on Regent Street, said she had been woken by the bangs, too.
'I thought they must have been fireworks,' she said. 'I don't think the sound was loud enough to be a 12-bore shotgun like the farmers have.
'The size of the bang made it seem more like an explosive had gone off, although it is a strange time to be setting off fireworks.
'It sounded nearby but Llangollen is in a valley so the sound echoes around and it can be difficult to tell.'
Police in the town are stumped, too, and are speaking with local farmers to see if they can shed any light on the situation.
'We have had a few calls about these bangs,' said PC Phil Jones
of the response team based in the town police station.
'Some say they sound like gunshots, others say it is louder, like fireworks. We have conducted an initial search for clues like spent cartridges or rockets but we haven't found anything.
'We are not even sure where the noises are coming from because we have had calls from people from the Chirk side of Llangollen and all the way on the opposite side of the town and everyone says the bangs sounded close by.
'Unfortunately the calls are coming from all parts of Llangollen across a big distance so it doesn't help us identify where the sounds are coming from.'
Llangollen is in a rural area, with many farms in the surrounding area and police are trying to find out if farmers have been using their shotguns at night.
'We are talking to farmers to see if they know what the noise is,' said PC Jones.
'It is usual to occasionally hear a shotgun fired, especially at night during the lambing season.
'But at this time of year it is unusual and it is also unusual to hear gunshots on consecutive nights.
'If they are having a persistent problem which means they need to use their guns this much, we need to know about it.
'At the moment, however, we don't know a lot about the noises but if anyone has any information about them they can come to the station or call 0800 6071002.'
nDo you know what is causing the mysterious bangs? Contact our newsdesk on 01978 351515.