A judge agreed to lower a 29-year-old man's bail by $100,000 after his lawyer said they've got a self-defense argument for the shooting outside a west Pasco home.

Peter Xayasounthone of Pasco is now behind bars on $150,000 bail. He'd been held on $250,000 since his Aug. 13 arrest.

Attorney Bob Thompson argued that his client was trying to protect a friend's home and wasn't necessarily firing at a vehicle containing the victim, who was with a group that vandalized a car for being kicked out of the house party.

Javier Casas, 18, was shot once in the shoulder and treated at Kadlec Regional Medical Center in Richland.

Thompson acknowledged that bail was important, but said $25,000 was more appropriate for his client -- a lifelong Tri-Cities man who has been staying with family.

Deputy Prosecutor Brian Hultgrenn had asked the judge to keep the bail at $250,000, pointing out that Xayasounthone has several convictions for assault and eluding police, along with 20 failures to appear in court since 2005.

Judge Cameron Mitchell, in agreeing to lower the bail amount, said the failures to appear "are pretty egregious in this case."

Xayasounthone is charged with first-degree assault. His trial is Oct. 12.

According to court documents, Xayasounthone was at a party in the 7900 block of Savary Drive when a group of uninvited guests showed up about 4 a.m. A fight started when the group was told to leave and the party crashers then began damaging a car parked at the house, documents said.

The car's windows were broken out and the side mirrors knocked off.

The vandals then got in a car to leave, and Xayasounthone allegedly fired several shots at it. Casas of Richland was a passenger in the fleeing car, court documents said.

A search of the home turned up a .357 Ruger revolver, believed used in the shooting, and five spent casings, documents said.