This is the scene yesterday at the soccer stadium in Torreon during a match between Santos and Morelia when gunshots broke out. Advance to about .38 to see where the fans _ and the players _ suddenly realize that a fierce gunfight is nearby. Later in the video, you'll see fans lying face down in the stands, huddled behind chairs, running wildly for the exits. The panic and fright are evident.
Employees sealed some exits from the stadium once they realized the shooting was outside. That's why you see frightened fans running in one direction, then across the field in another.
It later turned out that the shooting occurred outside the stadium. But the panic was such that it has become a national news item. Los Pinos, the presidential palace, issued a statement "energetically condemning" the violence.
I'm in Baja California with a shaky internet connection. But from what I can tell so far there was plenty of gunfire but no fatalities.