A 19-year-old woman was arrested by Dutch police in connection to the art heist in Rotterdam last fall that netted seven artworks by the likes of Matisse, Gauguin, Picasso and Monet, among others.

The woman is the girlfriend of one of two Romanian men already arrested in Bucharest on suspicion for the crime in January. She is thought to have occupied a flat where the stolen paintings had been stored.

Security footage helped police target the Romanian men, aged 25 and 28, for their behaviour and frequency of thier visits to the Kunsthal Gallery in Rotterdam, Netherlands.

"Given the speed with which it was carried out it was clear it must have been well prepared," the police said in the statement.

The paintings have not been recovered.