Alfred Chestnut, Ransom Watkins and Andrew Stewart are all in their early 50s 

They were put behind bars in 1983 after being wrongfully convicted of murdering DeWitt Duckett

Duckett was shot dead in the corridor of his high school over his Georgetown jacket 

The real shooter was named by witnesses as Michael Willis; he is now dead 

But detectives and prosecutors pushed for the three boys, who had been seen in the hallways of the school earlier that day, to be jailed 

They were 17 and 16 when they were put behind bars  

Chestnut wrote to the State's Attorney's office asking for the case to be revisited after the opening of the Conviction Integrity Unit

Since 2015, the unit has helped exonerate nine wrongfully convicted people