At least five people were killed when a small plane crashed in Switzerland Saturday, local police told the Bern-based Swiss News Agency "SDA". All those aboard the single-engine plane were killed in the crash in Fribourg canton. Witnesses said the craft circled twice over the village of Tatroz before coming down in a field around 3 pm (1300 GMT). The plane was travelling from Lausanne-Blecherette to Ecuvillens in Fribourg. The cause of the crash remained unknown.