Geoffrey Hocking, 60, of Ballater Street, Portland, was jailed on August 5 in the Portland Magistrates Court, but appealed against the severity of his sentence.

Late last week he abandoned his appeal and started serving the six-month prison term.

Hocking’s son, 20-year-old Troy Hocking, was gunned down in a Portland residential street on October 15, 2012, during a Portland drug turf war for allegedly owing a $65,000 drug debt.

On December 30 last year his father caused an accident in Percy Street, Portland, when he veered onto the wrong side of the road and ran into a vehicle containing four people, including a mother and her two children.

The court heard that although no injuries were caused, the family members were put in extreme fear.

Hocking pleaded guilty in the Portland court to six charges, including driving under the influence of drugs (methamphetamine) and driving in a dangerous manner.

His new six-month jail term included a previously suspended jail sentence.