California teenage girl fends off attacker by using jiu-jitsu

Assailant in Carmel tried to punch 13-year-old in face before she threw him to the ground and broke his ankle

A 13-year-old California girl is reminding the public that knowing self-defense can save one's life after she reportedly used her martial arts training to fend off a stranger who tried to assault her - breaking the grown man's ankle in the process.

The girl, whose name has not been widely shared, recently had to fight to protect herself three years since she began attending jiu-jitsu classes in Carmel, California, about 75 miles (120km) from San Jose, the local news station KSBW reported.