Русско-англо-русский юридический словарь

Electronic or documentary proof of corrupt behaviour, or a tidal wave of witness statements (who knows what Jeffrey Webb and others will have to say?) are usually what is required to successfully prosecute corruption cases. (The Telegraph)

A witness statement is a signed document recording the evidence of a witness. A definition used in England and Wales is "a written statement signed by a person which contains the evidence which that person would be allowed to give orally". (Wikipedia)