Tampa, Fla. ? A Florida judge on Monday declared a mistrial for Jamaican reggae star Buju Banton, who was accused of conspiring to buy cocaine from an undercover police officer last year.

U.S. District Judge James Moody made the decision after the 12-person jury sent him a second note saying they couldn’t reach a verdict.

In an earlier note, jurors said they were having trouble reaching an agreement shortly after returning from a weekend recess. Moody then sent them back to keep trying. Deliberations had begun Thursday after a four-day trial.

The jurors declined to tell reporters about their deliberations.

Banton’s attorney has asked Moody to release Banton on bond. He has been held without bond since his Dec. 10 arrest.

The attorneys and Moody discussed scheduling a new trial in December.

Banton, a four-time Grammy nominee, had been charged with conspiracy to possess and distribute cocaine and aiding two others in possessing a firearm during the course of cocaine distribution. He faced up to life in prison.