15th-century murder solved

Scientists carrying out tests on the exhumed remains of Agnes Sorel, the mistress of King Charles VII of France, have determined that she was poisoned with a lethal dose of mercury.

Although historians suspect that Sorel's murder took place under the orders of Charles' heir, the actual perpetrator and motive is not known. "We are leaning towards the thesis of an assassination," said Dr. Philippe Charlier, the leader of the examination, "because treatment with mercury was known and well controlled since ancient times."