Martin Diaz Jr, the defendant in a Quincy homicide case, pleaded not guilty at his Aug. 25 arraignment.

Diaz is facing charges of murder in the first-degree and unlawful possession of a firearm in the second degree.

From previous reports released by Quincy Police Department, on Aug. 11, officers had been dispatched to a residence that had reported a foul odor. Upon investigation, the foul odor seemed to be coming from a bedroom in the residence. Inside the bedroom, a body had been found wrapped in garbage bags.

Detectives at the scene found mail, identification cards, employment documents and a passport belonging to Diaz in the bedroom, according to court documents filed by police. In the same room, they also recovered a wallet with a Washington State identification not belonging to Diaz. The identification in the wallet matched the later fingerprint identification of the victim, Abel Vargas, a 29-year-old Quincy resident. He had been shot one time in the head, according to information detectives obtained from the autopsy.

Diaz was detained on Aug. 12 in Moses Lake. Moses Lake Police found a .40 semi-automatic handgun on Diaz and also located suspected Heroin and Methamphetamine, according to the documents. The suspected drugs are currently being tested at the state crime lab, said Captain Ryan Green of the Quincy Police Department. Future drug charges are up to the discretion of the prosecutor once the results of the testing are available.

Diaz was found to have two prior convictions of second-degree theft from 2013, which are felonies and prohibits the possession of a firearm.

The gun found on Diaz is suspected to be the same caliber as the murder weapon due to a .40 caliber casing found in the bedroom where the body was was also found, Green said.

Diaz’s trial date has been set for Oct. 14.

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