March 20 (UPI) -- Three family members have been missing since March 13 and might have been involved in a deadly multi-vehicle collision on westbound I-40 during a winter storm.

The Coconino County Sheriff's Office says Jiyeon Lee, 23, Taehee Kim, 69, and Junghee Kim, 64, were last known to be traveling west to Las Vegas on the interstate after leaving the Grand Canyon area.

They were traveling in a rented white 2024 BMW bearing California license plate 9KHN768, according to the Coconino Sheriff's Office, CBS News reported.

A flyer created by the sheriff's office says the rental vehicle's GPS last showed it traveling west at 3:27 p.m. MST, which is the same time that a deadly multi-vehicle accident occurred on westbound I-40, ABC News reported.

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