Barcelona: A Spanish bungee jumping instructor's "poor English" contributed to the death of a Dutch teenager who leaped from a bridge before her rope was attached, a judge has said, ruling his employer will face prosecution.

Vera Mol, 17, died in August 2015 when she jumped from a viaduct on a highway in Cantabria on Spain's north coast, as part of a group trip organised by a local adventure sports company.

Vera Mol died in August 2015.

The girl had misunderstood an instruction from the instructor to "No jump" as "Now jump", when he in fact intended to say "don't jump", the judge wrote in the ruling reported by EuropaPress.

The director of the company will now face prosecution for homicide through negligence, after appealing a court ruling last year. The appeal had argued that the teenager had jumped before she was told to.