Germany says it has arrested two former Syrian intelligence officers alleged to have been involved in torturing critics of President Bashar al-Assad.
Both men seem to have sought asylum in Germany after leaving Syria a few years before the migrant influx in 2015.
One them, Anwar R, is suspected of committing crimes against humanity.
He was allegedly in charge of a General Intelligence Directorate (GID) prison where 2,000 people were tortured between April 2011 and September 2012.
The other man, Eyad A, is suspected of aiding and abetting a crime against humanity at the same prison.
A third man – also believed to have been a GID employee – was arrested in France on Tuesday as part of a joint investigation, according to Germany.