Two days after the collision, which saw two regional commuter trains bore into each other at high speed outside the Bavarian town of Bad Aibling, police released news of the death of the 47-year-old man.
#BadAibling | leider 11. Todesopfer zu beklagen - Mann erliegt in Klinik Verletzungen— PolizeiOberbayernSüd (@polizeiOBS) February 11, 2016
Nine people, including the drivers and attendants on both trains, died immediately in the accident, while one of the 20 seriously injured people died in hospital late on Tuesday.
The latest victim was a Munich native, police said.
All of the victims so far have been men between 24 and 60 years old. Most were from the Upper Bavaria region, although one was from Brandenburg.
Investigators have yet to release any information about the cause of the crash.
"We have two components under investigation: the technical side and the human side," a police spokesman said.
Signal systems on the stretch of line where the accident happened are being examined, and two black box data recorders from the train analysed.
"If we were to come to the conclusion that there was no indication of technical failure, we would switch our investigations to the human side," the spokesman said.
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But he insisted that there was currently no reason to privilege either cause.
SEE ALSO: Bavaria train crash: what we know so far