I live 9 floors up in a condo and I'm relatively free of animals (soi dogs

Recently I have been finding very small dead geckos around the place. They are very small and slimy. Just as though they have just been born. Silvery skin and almost translucent and no tail and still developing limbs.
Have I got a secret predator hiding in my brickwork, ceiling or pipework or or a sick mother gecko dumping stillborns?