Federal prosecutor Kurt Schrimm said an investigation of 49 suspects turned up enough evidence to pursue charges of accessory to murder against 30 people in Germany who were allegedly stationed at the death camp in Poland.
Schrimm didn't release the names of the subjects, but he did say they range in age from 86 to 97.
The cases are currently being sent to state prosecutors officers in 11 German states. It will be up to them to decide whether the elderly suspects, which include both men and women, are fit to stand trial.
"The biggest enemy is time," Schrimm told reporters.
Another seven subjects who live outside the country are still being investigated.