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ST. LOUIS — The triple murder trial of 30-year-old Eric Lawson is going to have to wait until 2020.

Lawson is accused of killing his ex-girlfriend and her mother and setting an apartment fire that killed his 10-month-old son in 2012. Prosecutors are seeking the death penalty against Lawson.

Police have said that in May 2012, Lawson shot Gwendolyn Ray, 50, and her daughter, Breiana Ray, 22, and set an apartment fire that killed his son, Aiden Lawson. Another of Ray’s children — McKenzie Ray, 3 — was trapped inside but survived.

After two weeks of jury selection, prosecutors and defense lawyers were unable to find suitable jurors to sit for a nearly three-week trial from a pool hundreds. Some jurors were eliminated because of scheduling conflicts wile others were deemed unqualified to serve because of their views on the death penalty.

Officials say the trial, which was initially expected to wrap up by Thanksgiving, will be rescheduled for next year.

Lawson was charged in 2012.

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