Kyiv, Mar 2 (AP): The Associated Press journalists around Ukraine and beyond are documenting military activity during Russia's invasion. With disinformation rife and social media amplifying military claims and counterclaims, determining exactly what is happening can be difficult. Here's a look at what could be confirmed Tuesday as Russia's military assault on Ukraine was in its sixth day.

Directly witnessed -- Russian shelling continued to hit civilian targets in Ukraine's second-largest city, Kharkiv. In video verified by the AP, explosions burst one after the other through a residential area of the city.

— The administration headquarters in Kharkiv's city center also was targeted. Images showed the building's facade and interior badly damaged by a powerful explosion that also blew up part of its roof.

Closed-circuit television footage showed a fireball engulfing the street in front of the building, with a few cars rolling out of the billowing smoke. An emergency official said the bodies of at least six people had been pulled from the ruins and at least 20 other people were wounded.

— Hospital workers transferred a Kharkiv maternity ward to a bomb shelter. Amid makeshift electrical sockets and mattresses piled up against the walls, pregnant women paced the crowded space, accompanied by the cries of dozens of newborns.

— Flames shot up from a military base northeast of Ukraine's capital, Kyiv, in the suburb of Brovary, according to footage verified by the AP that was shot from a passing car. AP photos showed wounded men being treated at a hospital in Brovary.

— Images showed a TV tower in Kyiv on fire. Ukraine officials said a Russian strike on the tower killed five people and left five more wounded. Local media had reported Ukrainian TV channels stopped broadcasting shortly after the strike. An official with Ukraine President Volodymyr Zelenskyy's office said some channels have resumed broadcasting.

— In Moscow, people lined up to withdraw cash as sanctions imposed by Western countries threatened to drive up prices and reduce the standard of living for millions of ordinary Russians.

— Powerful blasts could be heard Tuesday night in central Kyiv. People on the ground reported car alarms were set off by the blasts, a first in the central part of the capital city where Russian forces are encroaching.

Sattelite Imagery — A convoy of armoured Russian vehicles, tanks, artillery and support was 25 kilometers (17 miles) from the centre of Kyiv early Tuesday morning and stretched about 65 kilometers (40 miles), according to satellite imagery from Maxar Technologies.

A US defense official told the AP later in the day the convoy's movements appeared to be paused.

The official spoke on the condition of anonymity because they weren't authorised to speak publicly.

Announced by Ukrainian authorities — Ukrainian authorities say Russian forces have blocked a major port on the Black Sea. Ihor Kolyhayev, the mayor of the port of Kherson located on the estuary of the Dnieper River, said Tuesday that it has been sealed by the Russian troops.

Kolyhayev's statement confirms Monday's Russian military claim that it has sealed the city while pressing its offensive in the south.

Announced by Russian authorities — Russia's Defense Minister Sergei Shoigu reiterated Tuesday the Russian military “strikes only military facilities and uses exclusively precision weapons” despite abundant evidence documented by the AP of shelling of homes, schools and hospitals across Ukraine.

— Russian nuclear submarines sailed off for drills in the Barents Sea and mobile missile launchers roamed the taiga on Tuesday following Russian President Vladimir Putin's order to put the nation's nuclear forces on high alert.

The Russian military didn't say whether the drills were linked to Putin's Sunday order and it was unclear whether they represented any change in the country's normal nuclear posture.

The military said the submarine exercises were to “train maneuvering in stormy conditions.” Announced by officials elsewhere — NATO's chief says the alliance sees no need to change its nuclear weapons alert level, despite Russia's threats.

NATO's secretary-general, Jens Stoltenberg, spoke to The Associated Press following talks on European security with Polish President Andrzej Duda at an air base in Poland where NATO's Polish and U.S. fighter jets are based.

— The UN human rights office says it has recorded the deaths of 136 civilians, including 13 children, in Ukraine since the start of Russia's invasion on Feb. 24, but warned the toll may be far higher.

— A senior Western intelligence official estimated more than 5,000 Russian soldiers have been captured or killed, although overall soldier death tolls remained unclear.

— The separatist forces in Donetsk say they have established two corridors for the evacuation of civilians from Mariupol, an indication that a large attack on the key Azov Sea port could be imminent.

Mariupol, an industrial centre, is seen as a key target for Russian forces for its economic value and its location, which would help Russia establish a land corridor between Crimea and the Russian mainland.

— UNHCR spokeswoman Shabia Mantoo said in Geneva that about 660,000 people have fled Ukraine for neighbouring countries since the start of the invasion. The number, given on Tuesday, was up from a count of more than 500,000 a day earlier.

— UN humanitarian coordinator Martin Griffiths said shelling and bombing have left “hundreds of thousands of families" without drinking water in Ukraine.

— The United Kingdom Ministry of Defence said Ukrainian forces hold Kharkiv, Kherson and Mariupol, but all three cities are encircled.

— A spokesperson for the Babi Yar Holocaust memorial said damage was inflicted to a Jewish cemetery at the site, which is near the TV tower that was attacked by the Russians.

The memorial is the site of a massacre of more than 33,000 Jews by Nazi Germany in 1941. Israeli Foreign Minister Yair Lapid issued a statement denouncing the damage and said Israel would help with repairs. (AP) VM VM

(This story is published as part of the auto-generated syndicate wire feed. No editing has been done in the headline or the body by ABP Live.)