Snake

I can't identify this snake. I first thought it was a Brown House Snake, then an Olive House Snake, but then I learned that Olive House Snakes have red eyes - so that eliminates that option. I thought it has a head-shape that looks like an African House Snake but I decided it is too small to be that - or maybe it is a young one. On the other hand maybe it is a common Slug Eater. The only thing that seemed to stand out for identification is a pale yellow stripe down its belly. Anyway, all I have left of him is the photographs because I released him back into the garden.