Facing criticism from all sides, France’s new prime minister Sébastien Lecornu resigned less than 24 hours after naming his government and after less than a month in office, plunging the country into a deep political crisis.

The French presidency said in a statement Monday that President Emmanuel Macron has accepted his resignation.

Lecornu had replaced his predecessor François Bayrou to become France’s fourth prime minister in barely a year.

Macron's opponents immediately tried to capitalize on the shocking resignation, with the far-right National Rally calling on him to either call for new snap elections or resign.

On the far left, France Unbowed also asked for Macron’s departure.

The resignation rattled investors, sending the CAC-40 index of leading French companies plunging.

The index was down by nearly 2% on its Friday close.

Ministers appointed just the previous night found themselves in the bizarre situation of becoming caretaker ministers — kept in place only to manage day-to-day affairs until a new government is formed — before some of them had even been formally installed in office.