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Opening statements are underway in the trial of a cable repair man accused of a killing that some say police could have prevented.

Anthony Triplett is charged in the murder of a woman in her home on the Southwest Side seven years ago.

Authorities say Triplett raped and killed Urszula Sakowska, 23,  after going to her house to repair her internet service on Dec. 8, 2006.

He’s also suspected of killing Janice Ordidge, 39,  in her Hyde Park home seven weeks earlier.

Sakowska’s family says Chicago police failed to send DNA evidence from Ordidge’s murder to the state crime lab in time to make a match with Triplett.

Between the two killings, Comcast allowed Triplett to continue making service calls.