Issue with Car Boot - Ford Focus 2007?

Issue with Car Boot - Ford Focus 2007?

Added (1). I've been having an issue with my car boot over the past month or two. While I'm driving the lock of the boot seems to come open. In some cases, it kinda half opens, where the car will tell me the boot is open, but a part of the lock is still secure and some of the times the boot just completely opens, but the springs keep it down.

Added (2). I've had a mechanic look at this and he took of the manual opening switch to see if there was a problem with the switch. But this still happens and even he seems baffled. Any help will be appreciated, thanks.

The boot latch of a European Ford Focus (not sure about the North American version) is electrically operated.
There's probably a fault somewhere in the electrics that is causing the latch to be released.
You should get a qualified auto electrician to check out the switches and wiring, rather than a mechanic.