A MAJOR explosion sent nineteen carriages of a Russian cargo train crashing off the tracks in a possible sabotage attack early today. 

The unexpected blast ripped up the railway line in Ryazan region, 130 miles southeast of Moscow in a fresh blow to Vladimir Putin on his home turf.

A mysterious white power was seen in seven of the overturned wagons. 

Officially, this was said to be “mineral fertiliser”.

It was suspected that the attack was either by Ukrainians operatives in Russia or by Russian partisans sympathetic to Kyiv. 

The rail incident was quickly labelled “sabotage” by the authorities after it appeared that this specific train was targeted.

Russian milbloggers have accused partisans of being behind the ambush that has caused severe damage to the railway line.

CCTV footage caught the sound of a loud explosion ripping up the the track and causing the heavy train to derail.

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Russian Railways reported that the crash was “as a result of interference by unauthorised persons in the operation of railway transport”.

The carriages were thrown off the line at 7.12am, near the town of Rybnoye. 

The driver’s assistant sustained minor injuries, and an ambulance was called.

The Russian Investigative Committee launched a criminal probe into the explosion and derailment. 

It came shortly after a suspected Ukrainian kamikaze drone attack on a Russian gunpowder plant and a factory making Iskander-M and other missiles.

Dramatic footage showed a blazing fire turning the sky crimson in the Tambov region, south of Moscow.

Russian media reported that the strike hit the military factory at around midnight on Friday.

Ukrainian telegram channels claimed their kamikaze drones were responsible for the daring attack.

On Friday, startling footage emerged of a Ukrainian drone attack that blitzed a Russian barracks and high-speed landing boats in occupied Crimea.