Police in Sunnyside are searching for a murder suspect after a 23-year-old man was killed in the backyard of a home in the 500 block of south 15th Street in Sunnyside on Friday night. Authorities say someone fired into the backyard just before midnight killing the 23-year-old man and wounding 4 other people. Those injured were treated and released from local hospitals. Police say a family was having a bbq at the home when the shooting happened. Sunnyside Police are hoping someone has some information that could lead to an arrest. Contact the Sunnyside Police Department at 509-836-6200.