KIEV, Ukraine — To the gasps, whoops and applause of stunned colleagues, Russian journalist Arkady Babchenko walked into a news conference Wednesday, less than a day after police in the Ukrainian capital said he had been assassinated.

Authorities said his death had been staged to foil a plot on his life by Moscow’s security services and one arrest was made. Russia denounced the faked killing as an outlandish attempt at defamation by its neighbor and foe.

Even Babchenko’s wife was unaware of the deception, and the 41-year-old Kremlin critic who fled to Ukraine 15 months ago apologized to her “for the hell she had to go through in the past two days. There was no choice there, either.”

Neither Babchenko nor Ukrainian Security Service chief Vasyl Gritsak gave details of the sting operation or how they made his wife believe he was dead.

Kiev Police Chief Andriy Krishchenko had announced Babchenko’s death Tuesday, saying the journalist’s wife found him bleeding at their apartment building in Kiev but that he died en route to the hospital.

Lawmaker Anton Gerashchenko, an adviser to the interior minister, said the assailant had waited on a staircase in the building and shot Babchenko in the back as he was going to buy bread.

Just hours before the shooting was reported, Babchenko wrote on Facebook that he considered the day a “second birthday” because it was the fourth anniversary of his missing a flight on a Ukrainian military helicopter that later was shot down in the conflict between Ukraine and Moscow-backed separatists in the eastern part of the country.

At the start of Wednesday’s news conference, Gritsak announced the journalist’s murder had been solved and called the day Babchenko’s “third birthday.”

Babchenko, clad in a black sweatshirt, walked into the room as other reporters gasped and exclaimed their surprise, then broke into applause.

“I’m still alive,” an uneasy-looking Babchenko said with a straight face. Then he apologized for the deception. “I know that sickening feeling when you bury a colleague,” he added.

Babchenko isn’t the first to fake his own death:

Gallery • 4 Photos

Tom Carew, shown here in a 2001 interview with the AP, was the best-selling author of "Jihad!" — an account of special forces operations in Afghanistan written by a former member of Britain's elite Special Air Service. In the weeks after the Sept., 11 attacks, Carew appeared on television as an expert on the Taliban. But Carew was really Philip Sessarego, who had served in the regular British army, not the SAS. In 1993, Sessarego faked his death in a car bombing in Croatia and reinvented himself as the dashing Carew. After the ruse was exposed by the BBC in November 2001, Sessarego moved to Belgium. His decomposed body was found in a garage in Antwerp in 2008. Police said he had likely died of carbon monoxide poisoning.

The news conference produced mixed emotions.

“I was shocked. But then a feeling of happiness rose up,” said Serhii Nuzhnenko, a freelance journalist.

Babchenko said he was not allowed to go into the details of his false death. He said Ukraine’s law enforcement had been aware of a contract on his head for two months. He said he was approached by the Ukrainian Security Service, or SBU, a month ago.

“The important thing is my life has been saved and other, bigger terrorist attacks have been thwarted,” he said.

It also was unclear why authorities decided to go to such lengths to make it look as if Babchenko was dead.

Gritsak said investigators had identified a Ukrainian citizen who allegedly was paid $40,000 by the Russian security service to organize and carry out the hit. The unidentified Ukrainian man in turn allegedly hired an acquaintance to be the gunman, he added.

The suspected organizer of the alleged hit plot was detained Wednesday, Gritsak said, suggesting the bogus killing was aimed at flushing him out, and he showed a video of the arrest.

The Russian Foreign Ministry said the Ukrainian government was “fanning anti-Russian hysteria. We’re confident our foreign partners and the relevant international agencies will draw correct conclusions from the whole situation.”

Babchenko, one of Russia’s best-known war reporters, fled the country in February 2017. He spoke and wrote about needing to leave Russia because of threats against him and his family. He said his home address was published online and the threats he received were made by phone, email and social media.

Moscow’s annexation of Crimea and support for separatists in eastern Ukraine were topics on which the journalist was scathingly critical of the Kremlin. His flight from Russia came several months after he wrote in a Facebook post that he wasn’t sorry that members of a military band and state TV journalists died in a plane crash on their way to Russia’s military base in Syria.

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Vasilyeva reported from Moscow. Jim Heintz in Moscow, Ayse Wieting in Istanbul, Turkey, and Geir Moulson in Berlin contributed.