Anti-Semitic death threats have been sent to Chelsea football boss Avram Grant, police said.
A note addressed to Grant was opened by a member of staff. It was found to contain anti-Jewish insults as well as claims that a white powder contained within was lethal.
A police source said it used the words: “When you open this letter you will die a very slow and painful death.”
The powder was analysed by specialists and found to be harmless, police said.
The letter also included threats to the manager’s wife Tzofit,.
A spokesman for Surrey Police said: “We were called to Chelsea’s training ground at Cobham at 12.15pm yesterday after they received a suspicious package.”
In a statement, Chelsea Football Club said: “The required procedure for dealing with such matters was immediately activated and the police and other services were called to handle the situation.
“A harmless substance was discovered. The matter is still being investigated.”