Alkaline is slated to perform live at New Rules on March 25 at the National Stadium car park.
The deejay, whose real mane is Earlan Bartley, was detained and questioned for three days in relation to the murder of Rohan "Head" Morris of Three Oaks Garden in St Andrew.
Morris was shot more than 15 times by armed thugs at his home in January. Sources say the 28-year-old unemployed man was slaughtered while next to a five year old child believed to be his daughter.
With songs like City, Extra Lesson, Formula, My Side of the Story, Company and Afterall, Alkaline dominated dancehall in 2016. His album, New Level Unlocked, produced by DJ Frass, was arguably the most critically-acclaimed dancehall album for the year. He held the top spot on the LOOP HOT IN 2016 dancehall rankings.