Germany, for the first time, has taken back children whose parents were IS fighters in Syria.
According to the German media, three of the four repatriated children are orphans.
The country's Foreign Minister Heiko Maas highlighted that the move will push for more such children to return to their home country.
"We will push for more children to leave Syria," he said. "These are mostly young children ... they cannot be made responsible for the actions of their parents and we want to do something to help."
According to reports, about 117 children with German citizenship are thought to be in Syria.

Russian air strikes kill 10, injure more than 50 in Ukraine's Kyiv
Firefighters battle wildfire in southern France
US, Iran talks conclude in Doha, focused on Strait of Hormuz
Trump honours Theodore Roosevelt in North Dakota, debuts new Air Force One
Kenyan court charges 8 schoolgirls with fellow students' murder
At least 5 people killed in fire in Antwerp apartment block
Three people die in Mexico World Cup celebrations as fans crowd streets
After Venezuela quakes, citizens lead rescues amid military theft accusations
