An investigation is underway after a package exploded in the back of a delivery truck in the San Fernando Valley Thursday morning.

According to the Los Angeles Police Department, the explosion happened around 10:15 a.m. in the Winnetka area.

A delivery driver was near the intersection of Winnetka Avenue and Runnymede Street when a package abruptly exploded. • A package in the back of a UPS truck exploded in the Winnetka neighborhood of Los Angeles on June 5, 2025. (KTLA) • A package in the back of a UPS truck exploded in the Winnetka neighborhood of Los Angeles on June 5, 2025. (KTLA)

The driver told paramedics on scene that he inhaled an unknown substance following the blast, which prompted the response of a hazmat crew.

The Los Angeles Fire Department also responded to the scene.

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