Ukrainian investigators are examining whether a terrorist attack in Kyiv was directed by Moscow after a man shot dead six people on Saturday before he was killed by police.

The gunman, 58, opened fire on passersby before barricading himself in a supermarket and taking hostages. Detectives sealed off the area in the Holosiivskyi district and tried to negotiate with him. He refused and was killed after a 40-minute standoff.

President Volodymyr Zelenskyy, speaking in his nightly video address, said police and the security services were trying to establish a motive for the “tragic” attack. About 14 people were injured, including a 12-year-old boy, he said.

“He took hostages and unfortunately, killed one of them,” Zelenskyy added. “He shot dead four more people right on the street, and one woman passed away in hospital after being seriously wounded. My condolences to the families and loved ones of the victims.”

Local media named the perpetrator as Dmytro Vasylchenkov, a Ukrainian citizen who was born in Moscow. He had previously lived in the Russian city of Ryazan and was a longtime resident of Bakhmut in the eastern Donetsk region. He had a criminal record, Zelenskyy said.