The incident took place on Pius XII Square, adjacent to Bernini's colonnade, on Saturday afternoon, according to the newspaper Il Messaggero.
The man, who is awaiting a decision on his asylum application in Italy, began shouting "Allah Akbar" and threatened to burn himself alive, waving a lighter. He was visibly agitated and emotionally unstable.
Urla Allah Akbar e tenta di darsi fuoco a San Pietro: richiedente asilo islamico – VIDEO - AllNews24 -
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Un cittadino iracheno ha minacciato di darsi fuoco con un accendino a piazza Pio XII, proprio davanti al colonnato di San... - https://t.co/GQ1CHi2Ema pic.twitter.com/akioMrYbVy
Police officers who were on duty near the Vatican quickly detained him and took him to a nearby police station.
The migrant reportedly had neither a bottle nor a backpack that could contain fuel or an explosive. The operation to detain the man was conducted swiftly, causing no trouble for tourists and pilgrims, the newspaper added.