Ukraine war live updates: Russia's Belgorod region comes under nighttime attack; Norway blocks entry for most Russian tourists

This is CNBC's live blog tracking developments on the war in Ukraine. See below for the latest updates. 

Russia said its border region of Belgorod came under a missile and drone attack overnight, claiming that its air defense systems shot down 35 rockets and three drones over the region.

CNBC was unable to verify the claims but Belgorod, adjacent to Ukraine's northeast Kharkiv region, where Russian forces are waging an intense offensive, has found itself under daily attack by Ukrainian forces.

In other news, Norway will further restrict access for Russian tourist travelers due to the war in Ukraine, blocking almost all entry, the Nordic country's justice ministry said Thursday.

NATO member Norway, which shares a border with Russia in the Arctic measuring almost 124 miles, first imposed restrictions on Russian tourist visas in 2022.

Russia has detained the deputy head of the army's general staff Lieutenant General Vadim Shamarin, on suspicion of large-scale bribe-taking, Russian media reported on Thursday, the latest in a series of arrests of top military officials.

The Kommersant newspaper reported that Shamarin had been detained in connection with alleged fraud, and that his home had been searched.

It is the fourth arrest of a high-ranking defense figure since April, when Deputy Defense Minister Timur Ivanov was placed in pre-trial detention for suspected bribe-taking.

Since then, Lieutenant General Yuri Kuznetsov, head of personnel at the defense ministry, and Major General Ivan Popov, former commander of Russia's 58th army, have aso been arrested.

The series of arrests comes amid major changes in Russia's defence establishment, after President Vladimir Putin this month removed long-serving Sergei Shoigu as minister,