Officer Clifton Lewis was killed during a robbery at a West Side convenience store on December 29.
The suspects, Tyrone Clay, 29, and 35-year-old Edgardo Colon, were arrested. Both are charged with murder while in commission of a forcible felony and first-degree murder of a peace officer.
Both suspects appeared in bond court Saturday morning and the judge denied their bonds.
"My son is innocent go out there find the guilty one before they kill someone else," said Clay's mother, Lovetta Jones.
Said Clay's girlfriend, Adelina Rodriguez, "He was nowhere. He was at my house at that time. They just got him for nothing"Lewis was an eight-year veteran of the Chicago Police Department who was working security as a side job at M and M Quick Foods at the time of the shooting. Police say the suspects stormed in and opened fire.
Colon, who was on parole for a 2007 home invasion conviction, has also been arrested for allegedly driving the getaway car.
He was taken into custody during a traffic stop on Tuesday and first held on an unrelated gun charge.
Authorities say both men have given videotaped statements implicating themselves in the slaying.
Police say the suspects and two other men came up with the plan. That's when authorities say Clay and another man not charged actually committed the hold up and got away with $670.
Cook County State's Attorney Anita Alvarez said an employee of the store heard the officer announce himself prior to the gunmen firing their weapons.
According to investigators when the robbers returned to the getaway car, Clay told the driver, "He was an (expletive) cop. I saw his badge."
"We're pleased, but we are not close to being through with this investigation, arrests, and prosecution," said police Supt. Garry McCarthy. "This is merely progress in the case."
Lewis died of multiple gunshot wounds.
He was laid to rest Thursday with honors.
"I stood here a week ago here with a heavy heart and I stand here today with my heart being a little bit lighter," said 1st Deputy Supt. Aly Wysinger.
At the store where Lewis was shot and killed, there was relief Saturday night.
"I pray to God that they're the right ones that's been charged with it, so justice can truly be served," said customer Darrell Mitchell.