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Search for accused Tinley shooter shuts down Ridgeland commute


Christopher J. Dyson

By Jeff Vorva

  A manhunt for an armed robber closed off Ridgeland Avenue to traffic south of 135th Street last Thursday afternoon.
  A Markham man was charged with murder and armed robbery Saturday after he fatally shot another man in the parking lot of a Tinley Park 7-Eleven last Thursday, authorities said.
  Various police agencies, including the Orland Park Police Department, engaged in a 45-minute manhunt last Thursday before apprehending Christopher J. Dyson, 18, of Markham. He was captured at a wooded area near Oak Park Avenue and 147th Street in Oak Forest.
  Some traffic had to be detoured in the mid-afternoon, which caused some delays in portions of Palos Heights.
  Dyson tried to rob a victim shortly after 3 p.m. outside of a 7-Eleven in the 16000 block of South Oak Park Avenue, police said. Dyson allegedly pulled out a gun and shot him.
  An off-duty Tinley Park officer was flagged down by a bystander who told the policeman the direction of the fleeing car. The officer called for assistance which set the wheels in motion for the manhunt.
  “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,” Tinley Park Police Chief Steve Neubauer said in a news release.
  The victim was 24-year-old Thomas Mastro, of Tinley Park, who died at Palos Community Hospital shortly after the shooting.
  Dyson was held without bail after a hearing Saturday from Cook County Circuit Judge Laura Marie Sullivan.
  Mastro was going to trade a gaming system to Dyson for an iPhone, according to news reports citing court records. Court officials said Dyson responded to a Craigslist ad from Mastro.