MIAMI -- Two jurors in the trial of one of two suspects in the killings of the crewmembers of the "Joe Cool" charter boat said Thursday they regret their guilty votes and want to take them back.

Venora Gray was one of 12 jurors who convicted 20-year-old Guillermo Zarabozo of four counts of causing death through the use of a firearm on Tuesday.

A mistrial was declared on 12 other charges, which included the kidnapping and murders of four crewmembers on a charter boat in 2007.

The conviction could still send Zarabozo to prison for the rest of his life, something Gray had never expected.

“I thought that would be a couple-year sentence or something," Gray told Local 10. "I did not know that could be a life sentence in itself.”

Gray added, “I just want to let his mother know how sorry I am. I believed (Zarabozo) was innocent. I want her to know that.”

Gray wasn’t the only juror wanting to take back her vote. A Key Biscayne resident and professor also served on the jury. She did not want to be identified but told Local 10 she did regret her vote. She believes most of the jurors misunderstood the count but were forced into going along with a guilty vote by an aggressive juror.

“He was abrasive," the juror said. "He would lose his temper. He would pound his hand on the table and say, 'Guilty, guilty, guilty!'"

For now, the defense attorney said he will make a new pleading to the judge on Friday regarding the jury’s verdict.