Jurors in trial of officer accused in death of Aiyana Stanley-Jones see stun grenade demonstration

DETROIT (WXYZ) - Jurors in the involuntary manslaughter trial of a Detroit police officer have watched a demonstration of a stun grenade like the one used during a raid that killed a girl.

The demonstration took place away from the Wayne County courthouse Wednesday. The grenade emitted a loud pop, smoke and a bright light. Judge Cynthia Gray Hathaway barred reporters from disclosing the location of the demonstration.

A stun grenade was used by Detroit police in 2010 as they tried to capture a murder suspect in a house. Seconds later, 7-year-old Aiyana Stanley-Jones was fatally shot.

The non-lethal explosive device is used by police agencies to temporarily disorient people with a blinding light and loud noise.

Officer Joseph Weekley is charged with Involuntary Manslaughter and Careless Discharge of a Firearm Causing Death.

Prosecutors accuse Weekley of being negligent when he fired one round from his MP5 submachine gun. He says he accidentally pulled the trigger when Aiyana's grandmother hit the gun. Mertilla Jones denies ever coming into contact with Weekley or his gun.

Prosecutors also told the jury that Officer Joseph Weekley's DNA and fingerprints were not found on his gun or his protective shield. 

The DNA and fingerprints of Mertilla Jones were also not found on the gun or shield.

A photo of Weekley taken the night of the shooting show him wearing gloves. But several police sources tell 7 Action News that they are surprised that not even Weekley's DNA was found on his own gun or shield.

Prosecutors declined to comment when asked if they are trying to suggest to the jury that the items may have been wiped clean so that only the blood of Aiyana remained splattered on Weekley's shield.

Prosecutors are expected to rest their case Thursday morning.

Defense attorney Steven Fishman has declined to say whether Weekley will take the stand in his own defense.

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