Security for Karen Read's first trial cost Massachusetts State Police more than a quarter of a million dollars.

The high-profile Karen Read murder trial ran the Massachusetts State Police hundreds of thousands of dollars in costs, largely in overtime pay.

Prosecutors have called on the state's highest court to allow them to retry Karen Read for murder in the death of her Boston police officer boyfriend, arguing against defense claims that jurors had reached a verdict against some of her charges before the judge declared a mistrial.

The ACLU has jumped into the Karen Read Supreme Judicial Court fight on the side of the accused murderer. The American Civil Liberties Union of Massachusetts filed a brief in Read’s appeal to Massachusetts’ highest court to have two of the three charges against her — including second-degree murder — dropped in her second trial scheduled for January.

Prosecutors in the Karen Read murder case said they’ve filed their response to her appeal to have two counts in her murder case dropped. The ACLU has also weighed in.