LOUISVILLE, Ky. (WDRB) -- There has been a new twist in the story of a Louisville teen shot to death in broad daylight. 

Police say they've learned what happened seconds before Mariah Wilson's death -- and that she was not just a murder victim, but also involved in a crime. 

A long two months put 24-year-old Lamontrez Jackson in front of a judge on Wednesday morning. He is charged in the September murder of his 19-year-old girlfriend, Mariah Wilson.

"They were participating in an act together," said Lt. Emily McKinley of the Louisville Metro Police Homicide Unit. "His actions led to her death."

Police say that "act" was robbery. Investigators believe the couple rushed into Anthony Harris' Liberty Green apartment and stole guns. 

"He chased after them and fired shots as they were running away -- and that's how she got struck," said Lt. McKinley.

Police had already arrested Harris, but Jackson has been on the run ever since, wanted for complicity to murder. 

Authorities tracked him down Tuesday after a dangerous chase lasting 54 miles, from Bowling Green to Elizabethtown, with speeds topping 100 miles an hour. 

Court records say Jackson was the passenger in a car reported stolen. Troopers say they ran it off the road, and then Jackson and the driver, David Williamson, tried to get away on foot, stopping traffic on the Bluegrass Parkway.

Back at Liberty Green, some neighbors vividly remember the day Wilson's body was found in the parking lot. 

"She was shot in the head and laying on the ground, you know, and that was it," said one neighbor who asked not to be identified. "That was it."

The neighbor says thieves broke into Harris' home on several occasions. 

"They keep on robbing him, and robbing him, and robbing him, and it came to a point where he's tired," said the anonymous neighbor.

Despite a second arrest, he says the shooting changed the way people feel living there. 

"It's dangerous," he said. "It's real dangerous and it probably ain't over yet."

Jackson pleaded not guilty for the Wilson case Wednesday and faces several more charges from Tuesday's chase. Police say the driver, 19-year-old David Williamson is also behind bars, but not tied to Wilson's shooting.

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