(CNN) -- The top part of a burning television tower collapsed in the Netherlands, leaving a trail of thick billowing smoke and fiery flames.





It was unclear what caused the fiery collapse in Hoogersmilde Friday.





The incident disrupted television, radio and mobile phone networks nearby.





Fire crews arrived before the collapse, but moved to a safe distance when they realized they could not extinguish the blaze, Mayor Jan Broerjes said Friday.





No one was injured.





An investigation is under way.





CNN's Ben Brumfield contributed to this report
What was the cause of the fiery collapse What city did the collapse happen in Has the cause of the fiery collapse been determined? What city did the fiery collapse occur in? where was the fiery collapse?
unclear Hoogersmilde unclear Hoogersmilde Hoogersmilde
question: What was the cause of the fiery collapse, answer: unclear | question: What city did the collapse happen in, answer: Hoogersmilde | question: Has the cause of the fiery collapse been determined?, answer: unclear | question: What city did the fiery collapse occur in?, answer: Hoogersmilde | question: where was the fiery collapse?, answer: Hoogersmilde