Ukrainian Strikes Rock Russia As Vote Cements Putin's Grip On Power

Ukrainian bombardments killed two people and set an oil facility ablaze in Russia on Saturday, officials said, on the second day of elections guaranteed to cement President Vladimir Putin's hardline rule.

Presidential polls opened this week but voting has been marred by an uptick in fatal Ukrainian aerial attacks and a series of incursions into Russian territory by pro-Ukrainian sabotage groups.

Fresh bombardments prompted authorities to close schools and shopping centres in the Belgorod region bordering Ukraine, undermining the Kremlin's efforts to isolate Russians from its conflict in its neighbour -- particularly during the highly touted elections.

Putin, who cast his vote online, vowed a harsh response to the assaults and accused Kyiv of trying to "disrupt" his bid for another six-year mandate.

The governor of the Belgorod region said air defence systems had downed eight Ukrainian missiles but that two residents were killed and others injured.

"A man was driving a lorry when a shell hit him, after which the vehicle crashed into a passenger bus. The people on it were not injured," Vyacheslav Gladkov wrote on social media.

"Another woman was killed in a parking lot where she and her son came to feed the dogs. Medics are fighting for her son's life," he added.

In a separate post, Gladkov announced that schools and shopping centres in the city of Belgorod and some surrounding districts would close temporarily over the coming days, the second time this month.

Russia's defence ministry earlier said it had downed rockets, missiles and drones in the border regions of Belgorod and Kursk that have suffered an uptick in fatal attacks in recent weeks.

The ministry later said it had fought off more "attempts to infiltrate into the territory of the Russian Federation by Ukrainian militant sabotage and reconnaissance groups".

The border attacks were a concern for voters hundreds of kilometres away in the town of Sergiev Posad outside Moscow, famous for its ornate Orthodox monastery with golden onion domes.

Casting her ballot from home with the help of election officials going door-to-door to collect votes from the elderly, 87-year-old Inessa Rozhkova said she hoped the polls would bring about an end to the conflict with Ukraine.

"Can you imagine how many people died? And now our border villages are suffering. We worry for them," she said.

In a nearby polling station set up in the vocational school, 68-year-old Elena Kirsanova came with her husband to vote for Putin.

"They try to scare us, but this is not a nation that can be intimidated," Kirsanova told AFP.

Putin said this week in televised comments that the spate of aerial and ground assaults by Kyiv's forces "will not go unpunished".

The 71-year-old has been in power in Russia since the last day of 1999 and is set to extend his grip over the country until 2030.

If Putin completes another Kremlin term, he would stay in power longer than any Russian leader since Catherine the Great in the 18th century.

He is running unchallenged, having barred two candidates who opposed the conflict in Ukraine, and around one month after his main opponent, Alexei Navalny, died in an Arctic prison in unexplained circumstances.

The Kremlin has cast the election as an opportunity for Russians to show they are behind Moscow's full-scale military campaign in Ukraine, where voting is also being held in occupied territory.

Russian Foreign Minister Sergei Lavrov on Saturday hailed Moscow's annexation of the Crimean peninsula -- where voting is also taking place -- 10 years ago from Ukraine.

"The peninsula is an integral part of the Russian Federation," Lavrov said in a statement on the ministry's website.

The first day of voting on Friday was however marred by acts of vandalism in polling stations, with a spate of arrests of Russians accused of pouring dye into ballot boxes or arson attacks.

And the ruling United Russia party that staunchly backs Putin announced Saturday it was suffering a large-scale hacking attack on its website.

The FSB security service also announced a spate of arrests, as polls opened, of Russians it said were aiding Ukrainian forces or planning to carry out sabotage at military and transport facilities.

On Saturday, they said they had detained a Russian man who was plotting with Kyiv's help to set explosive devices on a railway line in the country's central Urals region.

The governor of the Samara region that lies around 800 kilometres (500 miles) from the front lines said Saturday that Ukrainian drones had targeted two oil refineries, igniting a blaze at one of them.