Transit worker allegedly killed by felon on electronic monitoring despite repeated probation violations

A murder suspect accused of stabbing and killing a transit worker outside a train station in a daytime attack allegedly had prior run-ins with the law.

Chevazz Campbell, 37, is accused of stabbing and killing Julian Mobley, 41, a husband and father who worked for the Chicago Transit Authority as a janitor, according to FOX 32 Chicago.

It happened at the Damen Green Line station just before 3 p.m. Thursday.

Suspect Chevazz Campbell, 37, was charged with murder. (Chicago Police Department)

Campbell allegedly stabbed Mobley in his neck after the two got into an argument when the suspect entered the station through the gate without paying.

This was after Campbell allegedly sprayed Mobley in the face twice with mace, prosecutors said, according to FOX 32.

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A fatal stabbing of a Chicago Transit Authority worker happened on Thursday at the Damen Green Line station, police say. (FOX 32 Chicago)

Authorities said Campbell was on electronic monitoring and had at least four probation violations filed against him "over curfew violations" at the time of the horrific attack, FOX 32 reported.

Crime scene tape was seen at the Damen Green Line station in Chicago after police say a suspect on an ankle monitor stabbed and killed a transit worker last week. (FOX32 Chicago)

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Chicago Police confirmed to Fox News Digital that Campbell also allegedly robbed the victim and was arrested hours after the attack.

In a statement, the Amalgamated Transit Union said in part: "ATU Local 308 Brother Julian Mobley, a CTA Janitor, was tragically killed while trying to stop an attack on a fellow member over a fare dispute. He died a hero."

Cook County State’s Attorney Eileen O’Neill Burke and Amalgamated Transit Union Local 308 President Pennie McCoach said in a joint statement that the problems with the electronic monitoring system "could not be clearer," FOX 32 reported.

"We need a permanent legislative solution to close these gaps, strengthen accountability, and better protect people like Julian, who deserve to be safe on the job and return home to their families after work," the statement read.

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A janitor was stabbed and killed when a murder suspect on an ankle monitor attacked him, police say. (FOX32 Chicago)

Chicago Mayor Brandon Johnson said in a statement in part, "My administration remains committed to doing everything in our power to ensure safety on the CTA for its commuters and its committed employees who make public transit possible."

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Campbell is facing charges including first-degree murder, armed robbery and felon in possession of a weapon.

Fox News Digital has reached out to the Chicago Transit Authority for comment.