Letters meant for well wishes are now at the center of uproar as many learned students have written letters to convicted cop killer Mumia Abu-Jamal. According to FOX and Friends, Marylin Zunig, a teacher at Forest Street School in Orange, New Jersey, had her third graders write letters to Abu-Jamal. The letters were delivered by Johanna Fernandez, a professor of history at Baruch College. Zunig tweeted moments after sending the letters saying, "Just dropped off these letters to comrade Johanna Fernandez. My 3rd graders wrote to Mumia to lift up his spirits as he is ill. #freemumia" Fernandez says Mumia appreciated the public school children's letters. “It had been a long time since we had seen Mumia smile. He chuckled as he read excerpts from these touching letters,” she writes. The former death row inmate was rushed to a hospital in March to be treated for complications from diabetes. Richard Costello, political coordinator for the Philadelphia Fraternal Order of Police, called the letters alarming and outrageous on Fox News, adding all the teachers involved should be fired. 'Furthermore all the parents who have children in that school system need to reevaluate that involvement, because these children are now placed in danger by the very people charged with their education,' Costello said. The state prison system has been providing him with substandard medical care. Abu-Jamal, 60, is a former Black Panther serving life in prison for the 1981 murder of white Philadelphia Officer Daniel Faulkner. His conviction was upheld through years of appeals, but he has gained international support for his claim that he's the victim of a racist justice system. A federal appeals court threw out his death sentence in 2008, citing flawed jury instructions. Two guards are posted outside Abu-Jamal's hospital room, and two others are stationed inside, according to his wife. She said Abu-Jamal was handcuffed to a chair during her half-hour visit Tuesday, and she fed him ice chips. Advocates claimed that state prison officials failed to provide Abu-Jamal with proper medical care, saying he had no idea he was diabetic until he was taken to the hospital. They said he had been in the prison infirmary recently for treatment of a severe skin condition and underwent several blood tests that should have detected his diabetes. "The situation Mumia was in yesterday morning was a near-death experience," said Johanna Fernandez, an Abu-Jamal supporter and history professor at Baruch College. "So we want to know: How is it that the prison system allowed this condition to deteriorate in such a way?" Asked to respond, Susan McNaughton, a spokeswoman for the state Department of Corrections said: "When an inmate presents to the medical department with signs and symptoms of a serious illness, he/she is appropriately and immediately sent to the hospital for care." Amnesty International has maintained that Abu-Jamal's trial was "manifestly unfair" and failed to meet international fair trial standards. His writings and radio broadcasts from death row put him at the center of an international debate over capital punishment and made him the subject of books and movies.