The phrase "as a mistrial" is correct and usable in written English.
It can be used in legal contexts to refer to a trial that has been invalidated or declared void due to a significant error or issue.
Example: "The judge declared the proceedings as a mistrial after discovering that crucial evidence had been withheld."
Alternatives: "declared a mistrial" or "ruled a mistrial".
Another referred to the case as a mistrial, saying observed interference and political meddling could not be discounted as having intimidated witnesses, many of whom recanted their testimony.
The inquest was frequently interrupted by multiple legal challenges and a change of coroner, before finally being terminated as a mistrial on 30 September 2011; a new inquest into Smith's death began on 19 September 2012.
Without over-indulging in legalese, the verdict can be summed up as follows: a mistrial was declared on the top count of first-degree murder.
The apparent impasse could lead Judge Owen to declare a mistrial as early as today, though he could try to urge the jury again to try to resolve its differences -- called an Allen charge -- as he did earlier.
But at the end of the day, Judge Emmet G. Sullivan of Federal District Court decided not to dismiss the charges or declare a mistrial, as had been urged by Mr. Stevens's lawyers.
The alternative to the judge's instruction would be for the judge to declare a mistrial, as happened recently in the federal criminal trial of former baseball player Roger Clemens.
Without evidence of racial animus, what remains are defense stories of fear and self-defense, which the Zimmerman jury bought and at least two Dunn jurors did as well, resulting in a mistrial.
Skinner appealed, claiming that admitting the lyrics as evidence constituted a mistrial.
hamburger, asked for a mistrial as a result of the announcement.
Google argues that this is grounds for a mistrial, as you can't say there was a copyright violation if you can't decide on fair use.
Justice Sotomayor also said that the trial judge should have asked the jury to deliver a partial verdict before declaring a mistrial, as the defendant requested.
