(JTA) — The 81-year-old German art collector Cornelius Gurlitt, whose uncovered trove of early 20th-century works shocked the world last fall, made the Bern Art Museum in Switzerland his sole heir.

The museum made the announcement on Wednesday, saying it was surprised to be chosen since it did have a relationship with Gurlitt, who died on Tuesday.

“The Board of Trustees and directors of Kunstmuseum Bern are surprised and delighted, but at the same time do not wish to conceal the fact that this magnificent bequest brings with it a considerable burden of responsibility and a wealth of questions of the most difficult and sensitive kind, and questions in particular of a legal and ethical nature,” the museum said in a statement in which it identified itself as Gurlitt’s “unrestricted and unfettered sole heir.”

Gurlitt wrote the will within the last few weeks, shortly before undergoing heart surgery, his spokesman Stephan Holzinger told the BBC.

Some 1,400 works were confiscated from his home in 2012 in the course of an investigation for tax evasion. Other works were subsequently found in Gurlitt’s second home in Salzburg, Austria. The investigation is now closed due to his death.

Gurlitt’s father, Hildebrand, was an art dealer on assignment to the Nazis. When Hildebrand Gurlitt died in 1956, his son inherited the collection, which includes works by such greats as Picasso, Dürer, Renoir, Toulouse-Lautrec, Beckmann and Matisse.

In April, Gurlitt signed an agreement with the state of Bavaria and the German federal government according to which the provenance of all works would be researched, paving the way for the return of the paintings to heirs of the rightful owners.

In an email to JTA, a spokesman for the task force set up to research the provenance of works in the collection confirmed that its work in searching for possible rightful owners would continue despite Gurlitt’s death.

ADVERTISEMENT: Looking for a Jewish camp? Visit OneHappyCamper.org and see if your child qualifies for $1000 of their first summer or introductory rates through BunkConnect, programs of Foundation for Jewish Camp.​