MARIUPOL, Ukraine (AP) A man dashes into a hospital with a desperately wounded toddler in his arms, the childs mother on his heels. Doctors use smartphone torches to examine patients wounds.

New mothers nestle infants in makeshift basement bomb shelters.

A father collapses in grief over the death of his teen son when shelling ravages a soccer field near a school.

These scenes unfolded in and around the Azov Sea port of Mariupol in southern Ukraine over the past week, captured by Associated Press journalists documenting Russias invasion.

With nighttime temperatures just above freezing, the battle plunged the city into darkness late in the week, knocked out most phone services and raised the prospect of food and water shortages. Without phone connections, medics did not know where to take the wounded.

A limited cease-fire that Russia declared to let civilians evacuate Mariupol and Volnovakha, a city to its north, quickly fell apart Saturday, with Ukrainian officials blaming Russian shelling for blocking the promised safe passage.

Russia has made significant gains on the ground in the south in an apparent bid to cut off Ukraines access to the sea. Capturing Mariupol could allow Russia to build a land corridor to Crimea, which it seized in 2014.