Police announced that the available evidence is not sufficient to press charges. Stockholm transport authority SL however continues to demand compensation totalling 100,000 kronor ($12,664) from the man.
The student is suspected of vandalism on three separate occasions.
His graffiti became public when a film of his work, an approved final art project at the University College of Arts, Craft and Design (Konstfack), was shown at an art fair in February.
The student’s work drew criticism from the attending Swedish culture minister, Lena Adelsohn Liljeroth, who said at the time:
“I do not think that vandalism is art. And I presume that Konstfack does not intend to pay for the train carriage,” she said at the Market art fair in Stockholm.
Stockholm local transport authority SL then filed a complaint with the police and declared its intention to seek compensation for what it considered the sabotage of the metro carriage.
SL is also looking into the available legal alternatives with which to pursue those who make money from the film, according to a report in Svenska Dagbladet.