Security alarm system

[Tiny p]

Jazz 2013 model, double tap the key fob to lock car, indicator lights flash three times, then any given time after that, the alarm goes off, & will continue to do so until i remotely turn off by keyfob, checked my dashboard and all doors & boot & bonnet shown as closed, checked push switches on all doors on main body, non are sticking open, any ideas?

[DaveP]

Maybe check the glove compartment if it has a light or the boot light staying on?