Impressive footage of a group of thieves stealing the cargo off of a moving semi truck was released by the Swedish postal service on Wednesday.

The special cameras were installed by PostNord, the Swedish postal service, in conjunction with the police, and were put in place after goods kept disappearing inexplicably during transport, reported ABC News.

“We had a few incidents where someone stole some high-value goods that we couldn’t really explain,” said Head of PostNord Security, Alexis Larsson.

“We started to wonder if the thefts happened during transportation. So we built special cameras to see what really happened during transportation,” Larsson continued.

The cameras soon caught several thieves on tape, climbing into a moving trailer, and that’s when Larsson and the police really took action.

The cameras were again set up inside the trailer so that Larsson could monitor the footage and see the recording in real time, and the postal truck took off on its usual route.

The truck drove along and soon, thieves cut the lock on the door and could be seen climbing into the moving semi trailer from the hood of a car traveling around 40 mph.

“Suddenly I saw on the film how the back doors of the truck were opened and two men jumped in, from the hood of a car traveling right behind the truck at high speed and with no lights on,” Larsson said.

The men then ripped open the various packages in the back of the trailer, digging for something valuable.

“They looked through the cargo without finding what they were looking for and were then about to leave the vehicle. That was when I told the driver to brake,” Larsson continued.

The semi truck then stopped, and a “large police unit” appeared, flashing their lights and running their sirens.

“When the trailer stopped, the two offenders sat in the trailer, waiting for the police to take them away,” Larsson said.

“It is extremely unusual to catch a gang involved in this form of advanced crime – breaking open locks and getting into a truck at high speed.”

The men arrested in the case still await prosecution. Their identities, as well as any potential charges against them, have not been released.