SAN MARINO (CBSLA) — Two teenagers are under arrest on manslaughter charges after allegedly killing a college teacher and his dog while street racing in San Marino Thursday morning.

July 4, 2019. (CBS2)

The two boys, age 17, are facing vehicular manslaughter charges, San Marino police report. The victim was identified as 49-year-old Gabriel Crispo, who taught at Pasadena City College. His girlfriend’s dog also died in the wreck.

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According to police, a white Mercedes was racing a blue Toyota on Huntington Drive, near Kenilworth Avenue, when the accident occurred at around 10:35 a.m.

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Investigators say security video shows the driver of the Mercedes attempt to cut off the Toyota before losing control and flying across the center median, where the car struck and killed Crispo while he jogged with his girlfriend’s dog.

Both drivers were arrested at the scene.

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“Every morning for the rest of their lives, they’re going to wake up and they’re going to realize that they killed somebody,” San Marino Police Chief John Incontro said. “Their actions, at 17 years old, resulted in the death of someone.”