BOISE -- A Meridian man accused of shooting a Boise man in the head last March pleaded guilty today to a charge of involuntary manslaughter.

In exchange for the guilty plea, Ada County prosecutors agreed recommend a shorter prison sentence for 23-year-old Gregory Shain. He would have to serve at least two years of a 10-year sentence for involuntary manslaughter. Also, a weapons enhancement charge that could have meant an additional 15 years behind bars is being dropped. The prison term would be followed by 10 years of probation.

Shain was charged in the shooting death of 23-year-old Gary Arlen Jr. Police say the two men had been drinking and were playing a dangerous game with guns in Arlen's basement the night he died.

Shain told the court he has been thinking about pleading guilty for some time. When the judge asked why he decided to plead guilty, the victim's mother burst out with, because you did it!

Shain told the court that on the night at March 19, 2012, he left work at St. Luke's hospital and headed over to Gary Arlen Jr.'s house. Shain said he had a couple beers. Shain said Arlen pulled out a loaded gun, which Shain then unloaded. The gun, he said, was dry fired multiple times before someone put a clip back in the .45 caliber handgun. Shain said he raised the gun before leaving Arlen's house, and Arlen said to him, 'Do it, do it, do it, and Shain fired the weapon at Arlen's head.

According to the coroner's report, Arlen had drugs in his system at the time of his death.

Arlen's mother and sister were in court Wednesday but did not want to speak with us about the case. The mother sobbed loudly throughout Shain's court appearance.

Shain is scheduled to be sentenced on March 8, 2013.

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