The public prosecutor had already closed the case, but Spanish relatives of two of the graffiti artists asked the Matosinhos Criminal Investigation Judge to reassess the case which occurred near a train station in Maia, northern Portugal in 2015.

The two Spanish and one Portuguese graffiti artists were killed at 20:30 on 7 December 2015 in Maia when they were trying to paint graffiti on the coaches of a train parked there as another train passed at almost 120 km/h, hitting and killing them.

Before being hit by the train, the three youths had been hit by chemical powder from an extinguisher fired by the ticket inspector.

The youths’ relatives said the powder from the extinguisher stopped them from seeing the oncoming train - the judge was not convinced by this idea.