Local police say that all of the injured have been transported from the scene of the train crash to surrounding hospitals.
DW's Michael Watzke, who reported from the scene early on Monday morning, said that the remaining passengers had been brought to a community center in a nearby village.
He said that the crash site was still a hive of activity.
At least three people died when a regional train carrying some 100 passengers derailed in southwestern Germany.
Around 50 people are injured, a number of them severely, according to Charlotte Ziller, the fire chief of Biberach district, who spoke to reporters at the scene late on Sunday evening.
The regional express train departed Sigmaringen and was traveling to Ulm when at least two carriages of a regional train partially derailed in a forested area at around 6:10 p.m. (1610 GMT).
The accident site is about 45 kilometers (28 miles) southeast of Ulm, which is located on the border with the German state of Bavaria.Videos show hundreds of people, including firefighters, police, train workers and even the army helping at the scene of the accident as generators hum in the background.
Rescue workers with dogs were also checking that none of the passengers were trapped under the derailed carriages, Watzke said.
He added that there are plans to bring in heavy cranes on Monday to lift up the carriages.
The regional express was pulling four carriages, he said, when it derailed.
Richard Lutz, the chief executive of Germany's national rail operator Deutsche Bahn, said that everyone at Deutsche Bahn is deeply shocked and dismayed by the accident.
"My heartfelt sympathy and condolences go out to the relatives of the deceased. I wish the injured a quick and full recovery," he said, thanking all the emergency services and volunteers on site.
Lutz also said that he would visit the site of the accident on Monday.