Sheriffs deputies say he threatened another man with a gun and fired several rounds inside a home in Eagle late Tuesday night.
Vietz, 56, also is charged with a felony count of using a firearm in the commission of a felony and misdemeanor counts of battery, discharge of a firearm in city limits, resisting arrest and battering a police animal.
Officers used a K-9 police dog to arrest Vietz when he refused to give himself up after a brief standoff. Officials say Vietz tried to hit and kick the dog, which bit him on the arm. He was treated for a dog bite at a hospital before being booked into jail.
Ada County Sheriffs deputies went to the home in the 2400 block of East Lennox Court about 7 p.m. after getting a call that a man, later identified as Vietz, was acting irrationally and threatening to harm himself.
Deputies said Vietz had gotten into a fight with an 84-year-old man in the home. The man said Vietz hit him, threatened him with a gun and shot five to eight rounds into the walls, according to reports.
The older man left the home but Vietz remained inside for about two hours, while the Ada County Metro SWAT set up outside and crisis negotiators worked to get Vietz to come out of the home. He eventually did but refused to do what deputies told him to do. Thats when Vietz was bitten by the Garden City Police K-9 dog and arrested.
A preliminary hearing is set for Feb. 6. The crime of aggravated assault is punishable by up to five years in prison. If Vietz does post bond and gets out of jail, he will have to wear a GPS unit until his case is resolved.
In April 2011, Twin Falls prosecutors charged Vietz with two counts of felony injury to child for an unrelated Ada County case, but those charges were dropped in August 2011.
Patrick Orr: 377-6219, Twitter: @IDS_Orr