72-year-old man killed in motorcycle crash on I-5 in Thurston County, WA

Troopers are investigating after a man was killed in a motorcycle crash in Thurston County Saturday morning. 

What we know:

According to the Washington State Patrol, the crash happened just before 3 a.m. on I-5 near the Nisqually River. 

Investigators say the 72-year-old Renton man was riding southbound I-5 just north of milepost 114 in an unknown lane. He then left the roadway to the left and struck the guardrail on the left shoulder, before coming to a rest on the shoulder.

Troopers say the roadway was blocked for a little over two hours for the investigation. 

What we don't know:

It is currently unknown what caused the crash, and it is unknown if drugs or alcohol played a factor in the incident.

This is a developing story. Check back for updates.

The Source: Information in this story comes from the Washington State Patrol.

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