Why is my front crank clicking/creaking? I've purchased a new bike. Carrera Hellcat is the model.

I'm getting a click noise from the front crank but only when the middle sprocket has the chain on it, there are 3 at the front. There are around 10 small click sounds per every rotation. I'm just wondering if anyone knows what it could be.

I've tightened the chain ring bolts and the bottom bracket a bit but the problem is still there. 

Does any one have any ideas? 

Seems odd that there's no click on the other front gears.

Cheers!
Look at the front shifter metal cage. Is the chain touching it? It is the most likely problem. It may be more apparent with certain gears  in the rear than with others.

If yes, shift to the middle in the back. Try to turn the barrel adjuster on your left shifter one way and back. Does the noise change? It should and you should be able to find a position where it does not rub. 

After doing that you may need to adjust the limit screws for the inner and the outer chainring.