A Philadelphia man who served nearly three decades in prison for a triple murder has been freed after a judge threw out his conviction.

Theophalis Wilson was exonerated a month after his co-defendant, Christopher Williams, was cleared of the three 1989 killings. Wilson was a teenager when he was accused of participating in the brutal murders of Otis Reynolds and brothers Kevin and Gavin Anderson in north Philadelphia.

He spent 28 years in prison for the crimes.

"This is a great day," Theophalis Wilson said after his release Tuesday per ABC6. "Now we gotta go back and get the other guys. There's a lot of innocent people in jail."

"It's a beautiful day," said his mother, Kim Wilson. "I just thank God it finally happened."

The witness who testified against Wilson and Williams later recanted his story, admitting that he had provided false testimony in exchange for a deal to escape the death penalty. He also revealed that he hoped that he would eventually be released from prison.

"It is time for Mr. Wilson to be allowed to go home — that he go home a free man, and that he go home with an apology," unit chief Patricia Cummings said in court. "No words can express what we put these people through. What we put Mr. Wilson through. What we put his family through."

According to reports, Williams remains imprisoned on a life sentence in a fourth murder, a 1989 slaying in which he and another man were convicted but in which both have maintained their innocence.