Turkey's currency crisis turned increasingly political on Thursday after a top minister urged citizens to sue economists who comment on social media about the lira's slide.

Finance Minister Nureddin Nebati's unusual remarks late Wednesday followed the banking regulator's decision to file complaints against more than 20 people -- including a former central bank governor -- over their Twitter posts.

Turkey's beleaguered currency entered a tailspin that saw it lose nearly half its value from the start of November to the moment President Recep Tayyip Erdogan announced new currency support measures last week.

Analysts blame the falls on Erdogan's unorthodox decision to fight inflation by orchestrating sharp interest rate cuts -- the exact opposite of what countries usually do in similar circumstances.

Turkish Finance Minister Nureddin Nebati urged citizens to "file a lawsuits against anyone who misleads you"
Turkish Finance Minister Nureddin Nebati urged citizens to "file a lawsuits against anyone who misleads you" AFP / Adem ALTAN

The criminal complaint targeted journalists and economists who said the lira's falls would continue until Erdogan radically reversed his policy course.

Nebati accused the commentators of using "psychological warfare" by urging Turks to buy gold and dollars in order to preserve their savings against further lira declines.

"File a lawsuit against anyone who misleads you," Nebati urged citizens in a wide-ranging interview on CNN Turk.

"Let the small investor who makes a loss sue the one who misled them."

Durmus Yilmaz oversaw the central bank when Turkey was a foreign investors' darling in 2006-2011
Durmus Yilmaz oversaw the central bank when Turkey was a foreign investors' darling in 2006-2011 AFP / ADEM ALTAN

The Turks named in the criminal complaint include former central bank chief Durmus Yilmaz -- now a parliament member from the nationalist opposition Iyi Parti (Good Party) -- and economist Guldem Atabay.

Emerging markets economist Timothy Ash of BlueBay Asset Management called Yilmaz "the best governor during my stint in covering Turkey".

Yilmaz headed the policy-setting bank when Turkey was still a foreign investors' darling between 2006 and 2011.

"Guldem Atabay is just an excellent economist trying to do her best covering Turkey," Ash added.

Much of the focus in Turkey is now centred on how citizens respond to government efforts to rebuild trust in the beleaguered lira
Much of the focus in Turkey is now centred on how citizens respond to government efforts to rebuild trust in the beleaguered lira AFP / Ozan KOSE

The controversy comes with Erdogan's government preparing to unveil new legislation ahead of an election due within the next 18 months aimed at further tightening government controls over social media.

Turkey has used the threat of heavy penalties to force Twitter and other platforms to appoint local representatives who can quickly follow through on court orders to take down contentious posts.

Yilmaz continued his attacks on Erdogan's team on Thursday by poking fun at the finance minister's suggestion that the US Federal Reserve was owned "by five families" and lacked real independence.

"I swear, we are so tired of this," Yilmaz wrote.

Economist and journalist Mustafa Sonmez lodged his own complaint against Istanbul's chief public prosecutor and the banking regulator on Thursday for publicly naming him in its press release.

"Their crime: violation of the privacy of private life, damage to reputation and targeting," Sonmez said on Twitter.

Erdogan's new currency support measures are designed to make Turks feel safer about holding liras in the bank.

They effectively tie the value of special new deposits to the dollar by promising to compensate excessive losses incurred from swings in the exchange rate.

The central bank said late Wednesday it would also extend this "incentive" programme to people who hold their savings in gold.

Much of the focus in Turkey is now centred on how ordinary citizens respond to the policy moves.

Top officials have been incensed by media reports and claims from opposition leaders that the government has spent huge sums in the past few weeks indirectly supporting the exchange rate.

Erdogan's team argues that the lira's gains last week were prompted by trust in the new banking schemes and not the alleged currency interventions.

The lira has reversed its course correction and lost about 15 percent of its value against the dollar since the start of the week.