Riegel was captured and held as an Allied prisoner-of-war during World War II.

[4] Upon his release, Riegel returned to Bonn, and, along with his brother Paul, assumed leadership of Haribo in 1946.

In the same year, he organized the construction of the first indoor badminton court in Germany, called the Haribo-Centre, in Bonn.

Riegel owned the Jakobsburg Hotel and Golf resort near Boppard in the Rhine Valley in Germany.

[7] he died in Bonn Germany in 2013 at 90 Media related to Hans Riegel at Wikimedia Commons