BERLIN (AP) — A lawyer for families of alleged victims of a suspected Nazi death camp guard who died this week before he could be extradited for trial says German investigators should have acted more quickly to bring charges.

Thomas Walther, who represents seven members of victims’ families, said Thursday that Johann Breyer’s death in Philadelphia “clearly demonstrates the devastating effects of a hesitant and unnecessary pseudo-investigative procedure to the German justice system and public.”

Breyer was charged with being an accessory to murder in the deaths of 216,000 Jews at Auschwitz.

Walther blamed the Weiden prosecutors’ office, which led the investigation, for delays in providing U.S. authorities with documents, and for a decision to take statements from Auschwitz survivors that “contributed nothing” to the case.

Weiden prosecutors weren’t immediately available for comment.

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.