My Key keeps spinning in my door lock !! :(

[ALLANHARDIE]

I unlocked the door of my car and i heard a crack noise then i went to lock it after use and fount tht it would not lock and the locking barrel just spins and does not catch or stop at any point !! any advice or help?

 

[dave]

little bar thing may have come off the back, inner door panel off to have a look