Smoke and flame rise from the Nevskaya Manufaktura textile factory, founded by English merchant J. Thornton in 1841, in St. Petersburg, Russia, Monday, April 12, 2021. The emergencies ministry said the fire had broken out over several floors of the red-brick Nevskaya Manufaktura building on the Oktyabrskaya Embankment of the Neva River. (AP Photo/Dmitri Lovetsky)

a Russian Emergency Situations Ministry helicopter dumps water on a large-scale fire at the Nevskaya Manufaktura textile factory founded by English merchant J. Thornton in 1841, in St. Petersburg, Russia, Monday, April 12, 2021. The emergencies ministry said the fire had broken out over several floors of the red-brick Nevskaya Manufaktura building on the Oktyabrskaya Embankment of the Neva River. (AP Photo/Dmitri Lovetsky)

People look at smoke and flame rising from the Nevskaya Manufaktura textile factory founded by English merchant J. Thornton in 1841, in St. Petersburg, Russia, Monday, April 12, 2021. The emergencies ministry said the fire had broken out over several floors of the red-brick Nevskaya Manufaktura building on the Oktyabrskaya Embankment of the Neva River. (AP Photo/Dmitri Lovetsky)

People look at smoke and flame rising from the Nevskaya Manufaktura textile factory founded by English merchant J. Thornton in 1841, in St. Petersburg, Russia, Monday, April 12, 2021. The emergencies ministry said the fire had broken out over several floors of the red-brick Nevskaya Manufaktura building on the Oktyabrskaya Embankment of the Neva River. (AP Photo/Dmitri Lovetsky)

Smoke and flame rise from the Nevskaya Manufaktura textile factory, founded by English merchant J. Thornton in 1841, in St. Petersburg, Russia, Monday, April 12, 2021. The emergencies ministry said the fire had broken out over several floors of the red-brick Nevskaya Manufaktura building on the Oktyabrskaya Embankment of the Neva River. (AP Photo/Dmitri Lovetsky)

Firefighters work to extinguish a fire in a historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)

TOPSHOT Firefighters work to extinguish a fire in a historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)

Firefighters work to extinguish a fire in a historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)

Firefighters work to extinguish a fire in a historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)

Firefighters work to extinguish a fire in a historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)

TOPSHOT Firefighters work to extinguish a fire in a historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)

People watch as smoke rises from a burning historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)

TOPSHOT A helicopter flies to drop water on a fire in a historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)

TOPSHOT Smoke rises from a burning historic factory in Saint Petersburg on April 12, 2021. (Photo by Olga MALTSEVA / AFP)