A Cleveland prosecutor's office released a third report justifying the shooting death of 12-year-old Tamir Rice by two Ohio police officers last year.

The Cuyahoga County Prosecutor's office released an investigation report Thursday afternoon of the fatal shooting, which occurred in November 2014 after police mistook Tamir's pellet gun for a real firearm and shot him in a park.

Surveillance video of the shooting shows that Tamir was walking around and waving a pellet gun outside the Cudell Recreation Center. After a man called 911 to report someone pointing a gun at other people that he believed was "probably fake," rookie cop Timothy Loehmann responded by fatally shooting the boy just two seconds after arriving on the scene. Rice was then left lying in the grass bleeding to death for four minutes until a detective and FBI agent arrived. He died from his injuries the following day.

According to police expert W. Ken Katsaris, the shooting by the officer was "objectively reasonable," he said in the report, according to Newsweek.

"This unquestionably was a tragic loss of life, but to compound the tragedy by labeling the officers' conduct as anything but objectively reasonable would also be a tragedy," wrote Katsaris, a retired Florida police officer with more than 30 years of experience in law enforcement, according to the New York Daily News.

Following the release of the report, attorneys representing the victim's family said Katsaris, like the two other experts investigators, are biased in favor of police. They have also called for Cuyahoga County Prosecutor Tim McGinty to step down from the case and allow a special prosecutor to take over.

"Regrettably, with the release of yet another utterly biased and shamelessly misguided 'expert report' the County Prosecutor is making clear his intention to protect the police from accountability under the criminal laws, rather than diligently prosecute them," attorney Jonathan Abady of New York said in a statement Thursday.

Meanwhile, a group of Christian and Jewish leaders earlier Thursday called for activists to continue "nonviolent actions" until McGinty relinquishes the case.