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Charges filed in Tinley Park shooting death

Updated: March 28, 2013 5:18PM



Authorities have charged a Markham man in Thursday’s fatal shooting outside a Tinley Park convenience store, which prompted a massive manhunt that spilled into a nearby forest preserve.

Police Chief Steven Neubauer said Saturday that Christopher J. Dyson, 18, of Markham, has been charged with murder and armed robbery stemming from the shooting death of 24-year-old Thomas Mastro. A Cook County judge on Saturday ordered Dyson held without bond.

According to police, Dyson tried to rob Mastro in the parking lot of a 7-Eleven convenience store before pulling out a gun and shooting him in the chest. Neubauer credited an off-duty Tinley Park police officer, who had gone for a workout at a nearby gym, with the quick response that led to Dyson’s arrest.

“The fact that an off-duty officer in a marked car was at the scene almost immediately was instrumental in the capture of this armed offender,” Neubauer said in a written statement.

Dyson allegedly tried to rob Mastro outside the store, then shot him and fled. A bystander flagged down the off-duty officer and pointed out Dyson’s vehicle leaving the scene, police said.

Police arrested Dyson Thursday afternoon following a police chase into Oak Forest and a 45-minute manhunt. Police from Tinley Park, Oak Forest, Orland Park were involved, along with a Chicago police/Cook County sheriff’s police helicopter.

Dyson appeared in court Saturday morning and was ordered held without bond in the Cook County jail. His next court date was scheduled for March 26 at the Bridgeview courthouse.

Mastro, 24, lived just a few blocks away from the Tinley Park 7-Eleven where he was shot. He had a young son and would have been celebrating his 25th birthday Tuesday, his family said.

Mastro, of the 6900 block of Coachwood Trail, Tinley Park, died at Palos Community Hospital of a gunshot wound to the chest. On Friday afternoon, as family and friends gathered at the home, his father, Perry Mastro, described Thomas as “a good kid.”

He was an independent contractor and the father of a 4-year-old son. The family declined further comment.

“Our thoughts and prayers go out to the victim’s family and friends,” Tinley Park Mayor Edward Zabrocki said in a written statement. “This is a horrible crime and a tragic loss of life.”



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