It was early Saturday morning when the first reports of an explosion on the Crimean bridge came in.
The bridge links the Crimean peninsula with the Russian mainland and thus forms an important part of the supply line to the war front.
All indications are that a particular truck seen in the surveillance images was carrying large quantities of explosives, according to ballistics professor Bo Janzon.
- At least ten tons.
But it could have been upwards of 20-30 tons as well, he tells SVT Nyheter.
Indicates intentional act
It cannot be ruled out that it was an accident, he says.
But it's not very likely.
- Russia is not known for high security in the handling of explosive substances, but normally you are not allowed to transport ignition devices together with explosives.
The fact that the explosion occurred in a place where it could damage the bridge and also cause an adjacent train with flammable cargo to catch fire indicates that it was a deliberate act, according to Bo Janzon.
May have hijacked regular transport
One possibility could be that someone has hijacked or bribed an ordinary transport of explosives and used it to blow up the bridge.
- Then it's not so terribly difficult.
I can imagine that transports like this run daily, because a lot of explosives are used in war.
That it would be a rocket attack or something from under the water, he dismisses as unlikely.
- Ukraine does not have such large rockets.
And if it had come from underwater, the bridge would have obscured the railway bridge, and then you wouldn't have had this effect where the train catches fire.
Watch Bo Janzon go through the surveillance footage frame by frame in the clip.