The 911 call came Sunday night.
A 27-year-old man allegedly told dispatchers he’d fatally shot his younger cousin, and asked for help just before 9 p.m.
When Pierce County sheriff’s deputies arrived at the home in the 17300 block of 97th Avenue Court East, they found a 22-year-old man dead from an apparent gunshot wound.
The victim has not been identified.
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Investigators say the man waited several hours to report the homicide.
He was booked into Pierce County Jail on suspicion of first-degree murder.
The shooting was over a drug dispute, sheriff's spokesman Ed Troyer said.
This is a developing post. More information will be added when it becomes available.