There are school rivalries and then there are Chinese school rivalries. In Beijing, two girls are dead after the head of a rival school allegedly poisoned yogurt and put the food outside of the kindergarten where children play. The two schools have been competing for students. (The picture is a common yogurt drink in China and not necessarily the brand used in this crime).
The head of the school has reportedly confessed that she injected rat poison in the yogurt and had someone put the yogurt with some books outside of the rival kindergarten in Pingshan county in Hebei province. The children found the material and took them home. Two them suffered convulsions after drinking the yogurt and died later.
Source: National Post