Several lanes of eastbound Interstate 80 in the Vacaville area are blocked after a deadly crash Wednesday morning.

The scene is near the Leisure Town Road onramp.

Exactly what led up to the crash is unclear, but California Highway Patrol has confirmed that a Sacramento man who was a passenger in one vehicle has died. Two vehicles were involved in the crash. 

A SigAlert was issued around 7:20 a.m., alerting drivers that all lanes of eastbound I-80 in the immediate area were blocked. No estimated time of reopening was given. 

The slow lane was reopened just before 8 a.m. Traffic is expected to be impacted through the morning. 

Officers believe alcohol or fatigue were factors in the crash. 

This is a developing story.