I am located in Guatemala City, Guatemala. I live in a residential suburban area about 1500 mtr above sea level.
I have found 4 small snakes (aprox. 30 cm long, 10 mm diameter) in my bathtub. Their skin is red on top and light colored underneath, the head is black with a ring just below the head and some small black spots down the backs.

Could somebody advise me what they are. How could they have gotten into my bathtub (thrugh the drain or throug a window), etc.

Thanks in advance.

Carlos