Two 12-year-old pupils have been arrested in Hong Kong after they allegedly got into a fight and one slashed the other with a knife. Police said on Wednesday they received a report from staff at Tang Shiu Kin Primary School in Tuen Mun that a boy and girl had become embroiled in an argument. During the altercation, the girl allegedly attacked the boy with a knife while he was said to have hit back with his hands. The boy sustained an injury to one hand and the girl reported shoulder pain. The...