By Anna Voitenko

KYIV, April 19 (Reuters) - Eight people, including one child, remain hospitalised in Kyiv after being wounded in a shooting that ‌killed six people, Mayor Vitali Klitschko said on Sunday.

A Russian-born man ‌opened fire from an automatic rifle on passersby on Saturday before barricading himself in a supermarket ​with hostages, where he was shot dead by police.

Police stormed the supermarket after unsuccessfully trying to negotiate with the suspect for 40 minutes.

Klitschko said the wounded child, whose parents were killed in the shooting, was in moderate condition, while one ‌of the adults was ⁠in critical condition.

President Volodymyr Zelenskiy said on Saturday that the shooting, which happened in the capital's leafy Holosiivskyi district, injured ⁠14 people.

"They are all receiving all necessary medical care," the mayor said on Telegram.

The supermarket has been cordoned off and remains closed. Bullet holes are visible in ​windows of ​the supermarket, and blood stains can still ​be seen on the pavement ‌and asphalt.

Flowers were left near a residential building a couple of hundred metres from the supermarket, where the shooter shot his first victims.

"I saw how people grabbed children from the playground and ran away. They screamed: 'run away, hide.' People didn't understand what was going on. They said that there was a ‌man there, a man was shooting with a ​machine gun," Daryna, a 31-year-old local resident, ​told Reuters.

Another local resident, 73-year-old ​pensioner, told Reuters that the man he saw shooting bystanders ‌on Saturday "looked kind of smart."

"I don't want ​to clear him ​of blame or anything like that... but he didn't look like a killer."

Shootings of this nature are extremely rare in Ukraine and the country's ​security service said the incident ‌was being investigated as a terrorist act.

Police have not yet identified ​a motive for the crime.

(Additional reporting by Pavel Polityuk, writing ​by Pavel Polityuk, editing by Christina Fincher)