Not recognizing the mines that are still functioning, students to Frisbee

Two Swiss students on vacation found a landmine at the Danube river in Budapest. It seems that they were playing instead of frisbee without noticing that they are still mines that are at risk of exploding them.

Details are as below.
Ananova - Students played 'frisbee' with land mine

Lukas Aider of 20 years old and Christoph Kurz of 19 years who were playing with landmines. I found a mine in the Danube and played with it as a frisbee, but the observer made it stop finding it.

The liaison officer informed the police to come soon, a ship handling team arrived and dealt with landmines. It seems that the landmine was an antitank car mine in the former Soviet 6kg.

I think it's a bit painful to make Frisbee saying 6 kg, but it was lucky that it did not explode while playing.