One Indonesian official is under investigation for posting photographs on social media showing him posing in luxury cars, on motorbikes and even in a Cessna plane.

Another has effectively humiliated his wife in public by declaring she owns numerous fake handbags.

And a third has been suspended over photos suggesting he'd showered his wife with several gold bars, a new car and a luxury handbag, as an anniversary gift.

All three are among the latest targets in a national scandal that Indonesian media have dubbed "Filthy Rich Officials".

The government has now ordered a crackdown into public servants who flaunt their wealth in a country where corruption is endemic, and the minimum wage is below $500 a month.

For weeks social media users have 'named and shamed' one civil servant after another, whose online accounts document lavish lifestyles that appear to be beyond their means.

The social media witch hunt was triggered last month when the 20-year old son of a senior Jakarta tax official was arrested and charged with physically beating a teenage boy into a coma.

Witnesses later reported that the accused, Mario Dandy Satrio, had driven an expensive Jeep to the scene. Online photos then came to light showing him in luxury cars and on motorbikes, supposedly paid for by his father.

The case caused public outrage and a barrage of online questions as to where or how his father Rafael Alun Trisambodo had managed to accumulate so much wealth.

Indonesia's Finance Minister Sri Mulyani Indrawati later announced she had removed the tax official from his position, and ordered a full investigation into claims he had hidden millions of dollars in wealth and avoided paying taxes.

She also took action after social media users turned their focus towards Indonesia's director-general of taxation, exposing photos of him and his staff riding big motorbikes at an exclusive club. She immediately ordered the club's closure.

But the case has only fuelled a growing public campaign to expose other public servants seemingly showing off their ostentatious lifestyles.

The Regional Secretary of Riau Province, SF Hariyanto, called a press conference this week to explain why his wife had been "outed" on Instagram photos, carrying luxury handbags and wearing designer clothing and shoes, apparently worth more than his government salary could normally afford.

But Mr Hariyanto declared the handbags were in fact fake.

He also produced a store receipt that he said showed one bag had cost far less than the real item would, and was instead bought at a Jakarta shopping mall known for its knock offs.

Though one social media user later posted separate photos suggesting the shoes he claimed to have bought were not the same as those his wife was wearing in the Instagram photo.

"I'm sorry Mr Regional Secretary, the fake Gucci shoes are different from the ones flexed by your wife.

"Those are Gucci Pearl Embellished Platform sneakers, you know.

Mr Hariyanto also dismissed suspicions about photos showing his wife holidaying in Europe, saying she would share costs with friends and only used public transport overseas.

Since then another official, Esha Rahmansah Abrar, has been suspended by Indonesia's State Secretariat, amid an investigation into his wife's social media posts, which appeared to show he'd given her a car and several 24-carat gold bars for their anniversary.

Both the Anti-Corruption Commission (KPK) and Indonesia's Financial Transaction Reports and Analysis Centre (PPATK) are investigating his wealth.

Two customs official in Jogjakarta and Makassar, have also been targeted over photos on social media suggesting they too are living suspiciously lavish lifestyles that they could ill afford on their government salaries.