Again? Volcano Popocatépetl & UFO Ovnis Make News ~ Ufos Now

Yet another piece of news footage about UFOs and this famous Mexican volcano.
It seems that UFOs over the volcano have been reported countless times now.
The volcano like many others, is a no fly zone due to the danger the volcanic ash poses to aircraft engines (as leads to the phenomenon of St. Elmo's fire) .
So what were these objects? Can anyone translate this newscast:

Volcano