The footage from a drive through the once-thriving city shows high-rise residential towers gutted, towering electricity towers knocked to the ground and mostly empty streets.
Lapatina said there were many comparisons being made between Mariupol and the destroyed Syrian city of Aleppo.
'Mariupol will soon be completely cleansed'
The vision from Mariupol comes as forces linked to Russia claim victory in the city.
Chechen leader Ramzan Kadyrov said on Thursday that forces from his Russian region had taken control of the Mariupol city hall and hoisted the Russian flag.
Kadyrov posted on Telegram a video of a phone recording in Chechen, which he said was Russian parliamentary politician Adam Delimkhanov speaking to "our valiant men".
"The guys are radioing to say that they liberated the building of the Mariupol authorities and put up our flag over it," the Chechen leader said on his Telegram, which has more than 1.4 million subscribers.
The former rebel-turned-Kremlin-ally wrote that Ukrainian "bandits who remained alive did not risk it and abandoned their positions … and fled".
"Other units are moving in parallel through the city and clearing it of Azov filth," he added, referring to Ukraine's far-right Azov Battalion.
"God willing, soon Mariupol will be completely cleansed," he wrote. In a video released a few hours later, Kadyrov said Moscow's forces "have completely cleared the residential areas in the eastern part of the city".
The footage showed a group of soldiers raising a flag bearing the Chechen leader's image over a damaged building.
"Soldiers raised a flag over the building of the Levoberejny district prosecutor's office, the last one to be liberated," he said.
In the besieged southern port, Ukrainian President Volodymyr Zelenskyy said nearly 100,000 people were trapped without food, water or power and enduring fierce shelling by Russian forces.
Ukraine's foreign ministry tweeted Moscow had "launched a new phase of terror against Mariupol" by forcibly deporting about 6000 residents to Russian camps.
Kadyrov said on March 1 that Chechens had been killed in Moscow's invasion of Ukraine.
"Unfortunately, there are already losses among the natives of the Chechen Republic. Two died, six more were injured to varying degrees," Kadyrov said on Telegram.
Kadyrov, in charge of Russia's Chechnya Republic which he governs de facto by his own set of rules, has posted videos of Chechen fighters in Ukraine.
'We would rather die than kneel in front of Russians'
In Kyiv, the country's capital city, mayor and former world heavyweight boxing champion Vitali Klitschko said Ukrainian forces were pushing the invaders back in several areas around the capital.
"We are ready to fight for each building, each street, every part of our city," he said. "We would rather die than kneel in front of the Russians or surrender to the invaders."
Andriy Yermak, a top adviser to Zelenskyy, said Ukraine was holding out "with superhuman courage".
"But we cannot win a war without offensive weapons, without medium-range missiles that can be a means of deterrence," Yermak said.
