Alarm keeps going off for no reason?

Not 100% sure were to put this but I'll try here.

I've had my Clio 3 RS200 for about 4 weeks now and just today every time I lock my car either with the fob or on the handle, 1 minute later the alarm goes off. Any idea what this could be?! I'm becoming desperate as I can't even leave my car on the drive without it going off!
 
Not permanently, no. It's on the normal setting where it comes on and off with the doors/locking etc. I rang up renault and left it with a local renault dealer; they don't even have a clue what it could be! They're gonna have a look at it over the next couple of days as it's still under warranty. Hopefully it's nothing too major!
 
Check the footwells aren't damp and check for any signs of water ingress around the passenger footwell.
 
So it turns out that the problem was caused by the burton on the door handle being stuck in, therefore every time the car armed itself, it thought it was being tampered with so went off! Can't believe it was only something that small! Relieved though.