Groep became a councillor when he won ward 5 in the 2011 local government elections.
The Groep family has not received the autopsy report as yet and the cause of his death is unknown at this stage.
Eugene was born on 25 March 1961 and attended the Humansdorp Secondary School.
In 1983 he married Jesmaine Geswint and also joined the South African Police in the same year.
He retired in 2010 due to health reasons.
“On behalf of the DA, we extend our heartfelt sympathy to the Groep family and will support the family during this difficult time,” said Elza Van Lingen, the leader of the DA in the Kouga.
Funeral arrangements for Eugene will be finalised this week.