Hi all, I've just joined up so apologies if this is in the wrong place or I miss out a rule I didn't notice!

I've just got back into cycling after quite some time and got myself a Merida Matts 15MD. It's been a great bike for my first week or so and it's done some decent miles. It has now started making a very annoying squeaking noise that i'm hoping some of you knowledgeable people might be able to help me with. It happens without me applying the breaks - just while riding, or even just rolling the bike along the ground (so my weight on the bike doesn't seem to be a factor). I think that the sound is coming from around the area of the front disc break which sort of makes sense as if i slightly apply the break, the squeaking seems to stop, though obviously at the expense of the break then being applied which I clearly can't do for the whole ride for various reasons.

I could be wrong about where it's coming from and the sound stopping when i break might have been more of a coincidence but it does seem to point to something to do with the breaks as far as I can tell? I have heard that when you get a new bike you often need to take it back after 6 weeks or so to have cables tightened or something along those lines, but I don't know if it could be related to that because I've only had the bike a week. It's probably done about 60 miles?

Any thoughts?