The simultaneous hacking of emergency alert systems in Russia and Ukraine, disclosed overnight, came hours after the ceasefire covering the Kherson region ended - and hours before Russian strikes killed at least 26 people at a humanitarian aid distribution point in a village in southern Ukraine on Monday.

Ukraine said the truce in the south expired without violations, and that Russia resumed strikes on the Kherson region afterwards.

The end of the longest truce

The pause was the longest since Russia's 2022 invasion of its neighbour, according to Kyiv. It was brokered by US First Lady Melania Trump to enable a mission to the Russian-occupied city of Oleshky, began on Tuesday and ended on Sunday with no breaches reported by either side.

Its purpose was an evacuation of civilians from Oleshky, which Russian forces occupy. People were moved to both Ukraine-controlled territory and Moscow-annexed Crimea.

There was no extension. A senior Ukrainian figure said on Sunday that Russia refused a Ukrainian offer to prolong the truce.

The attack then came hours later, in the Zaporizhzhia region adjacent to Kherson. The war is now in its fifth year and has killed hundreds of thousands of people and displaced millions.

Strikes on the aid point

Russian forces struck a village in Zaporizhzhia repeatedly, the acting regional governor said, killing at least 26 people. Among the dead were civilians collecting humanitarian aid, emergency workers and police officers.

Some of those killed had come to collect aid at a local school. Footage from the Ukrainian emergency services showed the building reduced to piles of smouldering rubble, with rescuers working at the site.

President Volodymyr Zelensky said aid was distributed at the school every Monday, and that a repeat strike targeted the shelter after the first one, with aerial bombs used both times.

Acting regional governor Mykhailo Semikin said on Telegram that the dead included two rescue workers and four police officers. The emergency service named the rescuers as two 44-year-olds, Denys Konovalenko and Oleksy Sushchevsky, saying they risked their lives daily to save others.

Warning apps hacked on both sides

Overnight, both Russia and Ukraine reported that their emergency warning apps had been hacked in apparent cyberattacks that came hours after the truce ended.

Ukraine suspected its air raid alert system had been compromised after false alerts of a radiation threat were sent to millions of people. The system warns of incoming Russian drones and missiles.

On the Russian side, Moscow said an app belonging to its emergency situations ministry, which also warns of attacks, had been hacked. The app is not widely used in Russia, where alerts typically go out by text message in border regions.

Disputes over the pause and what comes next

Zelensky said that after the Oleshky truce there had been a moment when next steps could have shown that progress towards peace was possible, and accused Russia of counting on more killings and demanding a response.

Kyiv's military alleged that Moscow used the pause to fortify its positions. Kremlin spokesman Dmitry Peskov did not deny the allegation, and said Ukraine had also used pauses to regroup.

Peskov said Moscow saw the Oleshky humanitarian mission as successful, praising good cooperation between all sides and the role of human rights commissioner Yana Lantratova. Lantratova oversaw the ceasefire alongside her Ukrainian counterpart Dmytro Lubinets, in one of the most substantial instances of Russian-Ukrainian cooperation since the war began.

The Kremlin said no other similar missions were being planned at the moment.

US special envoy Steve Witkoff said US-led talks between Russia and Ukraine would resume next week, on November 10 and 11 in Abu Dhabi. President Donald Trump has pushed for a settlement, but there has been no breakthrough, and Kyiv and its European allies worry that Trump has increasingly sided with Moscow.