At a soccer match in Isfahan, Iran, fans were throwing trash and other objects on the pitch. A player picked up what he appeared to be a random piece of debris and tossed it off the field. No big deal, right? Very, very wrong.

As you can see in this unbelievable video, it was not just a piece of trash.

It was a grenade. A real, live grenade. Just seconds after the player nonchalantly threw it off the pitch, it exploded, sending the referees and players scrambling away.

A scary moment that could have ended far worse than it did. All involved are lucky no one was injured — especially the player who held the grenade!