Reza Pahlavi was splattered with red liquid in Berlin on Thursday, 23 April, after he left a news briefing during which he criticized the ceasefire between the United States and Iran.
Iran’s exiled Crown Prince, 65, appeared unhurt by the liquid, which covered the back of his blazer and neck, and waved to his supporters before departing in a car.
The incident occurred outside Germany’s federal news conference building.
Police said the liquid appeared to be tomato juice.
The alleged perpetrator was immediately detained.
Pahlavi is the son of Iran's last shah, who was overthrown from power in 1979.
