Utah Highway Patrol officers are hoping to get information to identify the driver of a car that apparently forced another vehicle off the I-15 freeway Saturday in Salt Lake City, killing the driver of the second vehicle.

Killed in the accident was:Hannah Lee, 26, 3102 Eugene Hill Way, Salt Lake City.

Lee died of internal injuries in LDS Hospital. A passenger, Sang Shim, 25, of Korea, did not suffer serious injuries.

According to the Highway Patrol, the unidentified driver pulled his car in front of Lee's, "and then he slammed on his brakes." Lee tried to pass, but the other car then sped up, cutting her off and causing her to lose control when she swerved to avoid him.

Lee's car crossed two lanes of traffic, flipped over a guardrail, ran into a small hill and then rolled down the 2100 South freeway exit.

Lee, who was not wearing a seat belt, was thrown from the car when it flipped through the median between the freeway and the 1300 South/2100 South exit.

The other car continued on its way.