DeKalb police have released a description of a third suspect in Sunday’s triple shooting at a Regent Drive apartment party.

The suspect is described as a tall, heavyset black male wearing a powder-blue puffy coat, matching baseball cap and a long white-gold chain around his neck. Police believe he was the main shooter.

The shootings occurred about 1:37 a.m. Sunday at 885 Regent Drive No. 103 when an argument broke out during a party. Police believe the suspects attended a concert at the Egyptian Theatre, 135 N. 2nd St., and later went to Harold’s Chicken, 901 Lucinda Ave., before heading to the scene of the shooting.

A second suspect is described as a tall, thinly-built black male who was wearing a two-tone green leather jacket with some black material worn off the shoulders. That suspect also was wearing a multi-colored Coogi brand sweater — predominately cream and burnt orange — and matching knit cap.

The third suspect is described as a thinly-built black male wearing a powder blue outfit and a matching baseball hat with a snakeskin brim. This suspect may have two empty teardrop tattoos under his right eye.

The suspects were believed to have left the scene in two separate vehicles — an olive green Navigator SUV with front and taillight damage and a dark-colored SUV or van of unknown make.

Police still are not releasing the names of the three victims and will not confirm the name of 19-year-old Kishwaukee Community College student Karlton Dorsey, who is being treated for a gunshot wound to the abdomen at Loyola University Medical Center in Chicago.

A second victim, a 21-year-old Kishwaukee student, was upgraded from critical to serious condition Tuesday, a Kishwaukee Community Hospital spokeswoman said. The third victim is a 25-year-old male being treated at Good Samaritan Hospital in Downers Grove.