Story highlights Jury will deliberate more after struggling to reach a unanimous decision

Lone juror has been holdout in ex-officer's murder trial in Walter Scott's death

(CNN) Deliberations will resume Monday morning after the jury in the murder trial of former North Charleston, South Carolina, police Officer Michael Slager told a judge Friday it has been unable to reach a unanimous decision.

The case appeared headed for a mistrial, but the jury three times went back to deliberate Friday after indicating to the judge it was unable to gain a consensus.

During one deliberation, a male juror took the unusual step of writing the judge a note, saying he couldn't vote for a conviction and wouldn't change his mind.

"I still cannot without a reasonable doubt convict the defendant," the male juror wrote. "I cannot and will not change my mind."

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