A man claimed to have taken ricin inside Newcastle Crown Court.
The 39-year-old told police he had swallowed several tablets of the chemical inside on the court rooms at the court in the city.
The man was taken to the Royal Victoria Infirmary for treatment.
A spokesman for Northumbria Police said: "A 39-year-old man was taken ill at Newcastle Crown Court at 11.39am.
"He was taken to the RVI where he is receiving treatment."