Russia-Ukraine updates: US sanctions Russian military shipbuilder, diamond miner

Russian military units are completing an overthrow of Ukraine’s nationalist Donbas Battalion, Russian Defense Ministry spokesman Igor Konashenkov told reporters at a briefing on Sunday.

The units advanced by 12 kilometers over the past day to reach the Nikolske line and blocked the populated area of Solodke from three sides, Konashenkov claimed.

Almost 1,500 Ukrainian tanks and other armored vehicles have been destroyed since the start of the military operation, Konashenkov alleged.

In addition, 150 Ukrainian multiple rocket launcher systems, 584 field artillery weapons and mortars, and 1,279 pieces of special military mortar equipment have been liquidated, he said.

The Russian Aerospace Forces also destroyed 89 Ukrainian military objects, as well as seven drones, over the past 24 hours, Konashenkov claimed.

About 10 million Ukrainians have been displaced within the country or have sought refuge in other countries since the invasion began last month, the United Nations High Commissioner for Refugees reported on Sunday.

Between Feb. 24 and March 19, 3,389,044 refugees left Ukraine, according to the agency, meaning there are more than 6 million internally displaced in Ukraine.

-ABC News' Christine Theodorou

Local authorities in the besieged Ukrainian city of Mariupol have accused Russian forces of forcibly deporting residents to Russia.

Mariupol’s city council said in a statement it received information Sunday morning that Russian troops were forcing residents of Azovstalkaya Street and from part of the Levoberezhny area to go to Russia. The statement said Russian forces were confiscating the Ukrainian passports of those being deported and issuing them a piece of paper.

ABC News has not independently confirmed the reports of people being forced to leave by Russian troops.

The Russian state news agency TASS reported on Saturday that 13 buses carrying 350 people were moving to Russia. About 50 of those people were to be sent by railway to the Yaroslavl region and the rest to temporary processing centers in Taganrog, a city in Russia’s southeastern Rostov region near Ukraine.

Ukraine has been trying to evacuate thousands of residents from Mariupol, with tens of thousands managing to escape in the past few days -- mostly in private cars heading towards the Ukrainian-held city of Zaporizhzhia. Around 300,000 people are trapped in Mariupol, according to Ukrainian officials.

In some parts of Ukraine, Russia has opened "humanitarian corridors" to Russia. Some people in some cities have chosen to go to Russia to escape the fighting, though the vast majority are seeking to move to safety in other parts of Ukraine.

The Office of the United Nations High Commissioner for Human Rights in Ukraine has recorded 2,361 civilian casualties in the country, including 902 dead and 1,459 injured.

In Ukraine's Zhytomyr region, more than 100 Ukrainian troops and foreign mercenaries were killed by a missile strike, the Russian Ministry of Defense claimed on Sunday.

"A strike using high-precision air-to-surface missiles has been carried out on a special operations forces training center of the Ukrainian Armed Forces, where foreign mercenaries in Ukraine were based near the populated locality of Ovruch in the Zhytomyr region," Russian Defense Ministry spokesperson Igor Konashenkov said in a press conference.