A POISON PEN letter containing an anthrax warning was sent to a pregnant woman in Warminster sparking a major security alert.

The young mother, who has not been identified by police, was taken with her 18-month-old child to the Royal United Hospital in Bath, where they were tested for traces of anthrax poisoning.

The area surrounding Brook Street was sealed of by police officers at 2pm on Thursday, July25, minutes after the heavily pregnant woman telephoned the emergency services.

Residents living in the quiet neighbourhood were evacuated from their homes as a safety precaution.

Police investigators examined the letter and home of the victim but found no traces of the deadly substance.

Anthrax scares have been rife in the UK since Middle-Eastern terrorist groups carried out genuine attacks in the USA using the chemical last year.