Ten students at an elite Hong Kong secondary school sustained injuries, including ear ringing, after a self-heating hotpot pack exploded in a classroom. The incident occurred when a student improperly heated the pack with hot water.

Ten students from an elite secondary school in Hong Kong were injured or experienced ringing in their ears after a self-heating hotpot pack exploded in a classroom on Wednesday. A police spokesman said officers received a report from St Paul’s Co-educational College in Mid-Levels at 3.29pm, that a self-heating hotpot pack had exploded after being improperly heated. A source said a 15-year-old boy was preparing the hotpot pack at about 1pm when he poured hot water onto it and it exploded. Six...