Seattle Police Officer Chris Williamson and his search dog, Dennis, join County investigators at Lake Sammamish State Park, Sunday, July 18, 2010, in Issaquah, Wash. A shooting at the state park near Seattle that left two dead and four wounded stemmed from an argument between two groups, one of which was celebrating a birthday party, investigators said Sunday. (AP Photo/The Seattle Times, Dean Rutz)
Seattle Police Officer Chris Williamson and his search dog, Dennis, join County investigators at Lake Sammamish State Park, Sunday, July 18, 2010, in Issaquah, Wash. A shooting at the state park near Seattle that left two dead and four wounded stemmed from an argument between two groups, one of which was celebrating a birthday party, investigators said Sunday. (AP Photo/The Seattle Times, Dean Rutz) AP
Seattle Police Officer Chris Williamson and his search dog, Dennis, join County investigators at Lake Sammamish State Park, Sunday, July 18, 2010, in Issaquah, Wash. A shooting at the state park near Seattle that left two dead and four wounded stemmed from an argument between two groups, one of which was celebrating a birthday party, investigators said Sunday. (AP Photo/The Seattle Times, Dean Rutz) AP

Argument, gunfire, deaths at state park

July 19, 2010 07:05 AM

UPDATED July 19, 2010 07:09 AM

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