Bahrain later announced it would retry them in a civilian court, after the verdicts drew criticism on human rights grounds.
The verdict drew wild cheers from hundreds of Iranian exiles who had demonstrated outside the courthouse to demand an end to Germany's relationship with Iran.
Although both men were acquitted of the rape at trial in May 2011, the jury's verdict proved highly controversial and drew large protests.
The verdicts drew wide criticism from human rights organisations citing them as examples of "political and summary justice".
The verdict has drawn criticism from Bahrain's western allies and human rights organizations.
Back in the courtroom, Justice Eggert's verdict drew a ripple of applause from police officers.
Their verdict drew gasps from the supporters of the Sanderses in the courtroom.
The verdict and sentence drew angry reactions from both Serbs and Bosnian Muslims.
The verdict drew polar responses.
The verdict, the first federal death sentence in New York in half a century, was drawing some attention.