Trial set for Lexington Park man charged with second-degree murder

Marcell Davon Blackiston

Leonardtown, MD- St. Mary’s County State’s Attorney Richard Fritz will once again attempt to secure a second-degree depraved heart murder conviction against a suspected drug dealer in connection with a deadly overdose.

Marcell Davon Blackiston, 32 of Lexington Park, is charged with two counts of controlled dangerous substance (CDS) possession-not marijuana, two counts of CDS distribution of narcotics, manslaughter, reckless endangerment and second degree depraved heart murder.

Blackiston is among a group of eight suspected drug dealers who were indicted in August of 2017 in connection with the fatal overdoses of St. Mary’s County citizens.

So far, Fritz has tried two of the eight cases; Regina Claggett-Brown and Christina McCauley. In both cases the jury did not find either defendant guilty on the second degree murder charge.

Blackiston’s trial is scheduled to begin Tuesday, Jan. 9 in St. Mary’s County Circuit Court. According to the criminal indictment, Blackiston sold heroin laced with Fentanyl to DeAnna Lynn Howeth, of Lexington Park (pictured, right). She died Tuesday, May 23, 2017.

Blackiston has a criminal history dating back to 2005. He has been convicted of a number of crimes, including theft, assault and possession.

Judge Michael J. Stamm will preside over the jury trial.

Contact Joy Shrum at


Editor’s Note: All individuals arrested or charged with a crime are presumed innocent until proven guilty. The story was compiled using information from police and public court documents.

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