When someone is convicted of a crime punishable by death and is executed, and you hang him on a tree, 23 his corpse must not remain all night upon the tree; you shall bury him that same day, for anyone hung on a tree is under God's curse. You must not defile the land that the LORD your God is giving you for possession.
In Galatians 3:13, Paul indicates an awareness of the tradition of a curse befalling anyone hung on a tree, whether left there over night or not:
Christ redeemed us from the curse of the law by becoming a curse for us -- for it is written, "Cursed is everyone who hangs on a tree"
Ludemann [Jesus] (110f) notes the usual Roman practices described already, but also refers to Philo's description a practice of permitting proper burial to those crucified in proximity to a major feast:
I have heard of those who have been crucified who, because ... feast days were imminent, were taken down from the cross and given to the relatives, so that they received a dignified burial in accordance with custom. For the dead too should benefit from the birthday of the sole ruler, and at the same time the holiness of the festival should be preserved. [Flacc, 83]