A man carrying a fake bomb took staff members hostage at a bank and threatened to blow up the building before armed police stormed the building.
One of the hostages is said to have live-streamed video of the drama on social media while he was held inside an Alfa-Bank branch in central Moscow, Russia.
Footage posted online is alleged to have shown the suspect pacing around in an office and masked police storming the building where about six people were being held.
The hostage-taker is said to have walked in with a food delivery bag and claimed that it contained a bomb, and was reportedly wearing the uniform of a local food delivery chain as he demanded a huge sum of money.
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The man is reported to have told staff that he was going through "a difficult situation in his life".
He was detained after barricading himself inside the building, which had fewer employees working than usual due to the coronavirus outbreak, on Saturday afternoon, local media reported.
He was carrying a "dummy explosive device" and all of the employees had left safely before he was taken into custody by police, according to reports.
It was suggested that the man may having been suffering from mental health problems.
There were claims that he was wearing the uniform of a food delivery chain.
A police source told Russia's Tass news agency: "The special operations unit has just conducted an assault on the Alfa-Bank office and apprehended the perpetrator who threatened to blow up the bank.
"According to the preliminary data, he had a dummy explosive device."
Earlier, a bank spokesperson told Tass that no employees were inside the room where the hostage-taker was barricaded.
The spokesperson said: "The data is still preliminary, but we know for sure that the employees have left the room; there is a man in the office who has barricaded the front door.
"His demands are unclear, and, according to our colleagues, he is delusional."
The spokesperson added: "There are exceptionally few people at the office on Saturdays amid the self-isolation."
Police sealed off the area and attempted to negotiate with the suspect.
The food delivery company said it had no confirmation from police that one of its employees was involveed.