Polish prime minister, Donald Tusk has shared that the United States has expressed interest in taking part in the country’s investigation into what is now believed to be a Russian missile crash on Thursday.

Frustrations have grown as record numbers of Ukrainians seek shelter in the face of mounting Russian attacks.

While the capital has seen metro stations become a popular alternative to traditional shelters, there are not enough to accommodate Kyiv’s three million residents.

Dmytro Dichenko, a 30-year-old musician and marketing specialist, shared his experience after he tried to seek shelter at a metro station last year: "Metro security treats people as if they are going there for fun."

Dichenko and his wife were turned away by security between waves of strikes.

Missiles had reached the city once they got back home.

Since then, they mostly stay at home during a Russian attacks, as Dichenko's prosthesis makes it hard for him to run.

But Dichenko's experience ⁠is by no means unique.

Without adequate shelter provision, many residents across Ukraine have resorted to sleeping in underground parking lots, or relocating to basements — a choice that risks being buried under rubble.

For others, the only option is to stay in a bathroom or a corridor, with zero protection from a direct hit.

"The situation with shelters is very poor, given that we are now in the fifth year of the war.

"As a result, we are seeing a higher number of civilian casualties, " Dichenko emphasised.

With over 4000 shelters, Kyiv has more than any other Ukrainian city.

But the state ombudsman's office has found problems in 93 per cent of 1,066 sites it has inspected, including 125 in the capital.

Russia has killed 73 people in intensified attacks ⁠on Kyiv over the past two months, according to the city's military administration.

As demand for safe spaces has spiked — with some sheltering ​for the first ⁠time — the lack of proper sites has come into focus.

Current issues with the shelters include accessibility for people with disabilities, sanitation, and maintenance.

As a result, Kyiv's 47 underground ⁠stations have become some of the city’s most reliable shelters, though even they are not totally safe.

On Thursday a record 56,000 Ukrainian residents sought shelter in a metro station.

Vitali Klitschko, Kyiv's mayor, has said that city authorities have set aside over 1.1 billion hryvnias ($24.51 million) this year to repair `shelters, adding that since the start of Russia's invasion in February 2022, they had spent 7 billion hryvnias.

Ukraine ⁠has requested that ⁠its specialists ​be ⁠allowed ⁠to ​help ⁠Poland ‌with its investigation into ‌an ‌object ⁠that fell in eastern Poland, prosecutor ‌Grzegorz Trusiewicz ​said ‌on ⁠Thursday.

While an investigation into the matter continues, the crater is believed to have been caused by Russian missile crash.

Russian forces have captured four settlements in eastern and northeastern Ukraine, according to reporting by RIA, a state-owned news agency.

The defence ministry has said that Russian troops have successfully taken Chernihivka in Donetsk region, as well as Mala Slobidka and Mohrytsia in Sumy region and Yurchenkove in Kharkiv region.

Together, these areas cover the established eastern front, as well as Ukraine’s northern border with Russia.

The Ukrainian military has hit four Russian tankers in the Black Sea and Sea of Azov, according the country’s drone force commander.

Following an ongoing investigation into the source of a ten-metre crater found in Poland on Thursday, the Polish prime minister has said: “It looks like it was a Russian missile, but we don’t have a hundred per cent certainty exactly what kind of missile.

"All the indications are ‌that it was ‌a Russian Kh-101 ballistic ⁠missile,” the leader told an emergency meeting.

A Russian cruise missile is believed to have entered ​Poland's airspace overnight, “violating NATO airspace,” Ukraine's foreign minister said on Thursday.

The event occurred amid Russian airstrikes confirmed to have killed at least 13 people in neighbouring Ukraine.

The Russian prosecutor's office has confirmed that Ukrainian drones have attacked the port of Taman in Russia's `southern Krasnodar region.

Regional authorities had ‌said earlier ‌on Thursday that ⁠a drone attack on an unnamed enterprise in the village ‌of ​Volna had ‌caused ⁠a fire ⁠at the ‌site.