Authorities reported a serious injury to a 15-year-old student during a protest. The student's hand was blown off, allegedly by a police grenade. Demonstrations are taking place at hundreds of schools nationwide, with students demanding better teaching conditions.

The incident occurred on Monday, according to authorities. Further details about the protest and the incident are available from the source.

The demonstrations are part of a nationwide movement, with hundreds of schools participating, to advocate for improved teaching conditions.