A gang of youths is behind Adelaide’s year-long spate of luxury vehicle thefts and wild police chases that have been causing mayhem on the roads, it can be revealed.

Charges of theft against convicted South Australia  drug smuggler Cassandra Sainsbury have been dropped at the request of a small Yorke Peninsula tennis club.

Authorities are investigating claims by two councillors that an influx of more than 300 voters in their West Torrens ward may be a local government election scam.

And in sport, they say good things come in threes, but at Port Adelaide, it seems better things might come in fives.

For updates and breaking news throughout the day, take out a subscription at advertiser.com.au