Raw video:June 08/08:Recently released footage:Welsh police confirmed that one of their helicopter crews had spotted an "unusual aircraft" flying over Cardiff earlier this month.
An investigation into the sighting had been launched, they said.
The police clarification came after tabloid newspaper The Sun reported a UFO had "attacked" a police helicopter, following it for several miles over the Bristol Channel.
"The pilot banked sharply to avoid being hit, then launched into a high-speed pursuit. But he was forced to give up the chase as the helicopter's fuel ran low -- and the UFO escaped," the tabloid reported.
The helicopter crew had described the object as "flying saucer-shaped and circled by flashing lights," it added.
That description was rather more dramatic than the official police version, which said: "South Wales Police can confirm its air support unit sighted an
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