BERLIN: The estate of the Germanwings co-pilot believed to have intentionally crashed Flight 9525 in March has been declared bankrupt after no heirs came forward.

Insolvency attorney Joachim Glaeser said Friday that his filing this week in a court in Montabaur, co-pilot Andreas Lubitz's hometown, was a procedural measure necessary after neither Lubitz's parents nor anyone else declared themselves as heirs.

The German daily Bild reported that would likely protect Lubitz's potential heirs from inheriting possible claims on the estate.

Glaeser wouldn't give any details of the worth of Lubitz's estate.

Prosecutors believe Lubitz intentionally crashed the Airbus A320 into a French mountain on March 24, killing all 150 people on board. His parents have refused all interviews.