Editor's note: An earlier version incorrectly reported the city of residence of the driver in the crash. The 17-year-old woman was from Boise.

The names of two 17-year-olds — one male, one female — who were killed when their car plummeted 100 feet down an embankment near Table Rock early Sunday morning are not being released, so that families may be notified, according to the Ada County Sheriff's Office.

The sheriff's office says two others were injured in the crash, including a 17-year-old Boisean suffered critical injuries. He was taken to St. Alphonsus Regional Medical Center.

The crash was reported at 2:19 a.m. by a resident on East Wild Horse Lane. Sheriff's officials say the group of teens had been visiting a house on that road prior to the crash.

The group was traveling in a Hyundai Tiburon. The 17-year-old female from Boise who was killed in the crash was driving the vehicle, the sheriff's office says.

Investigators are still trying to determine what happened, but they say it appears the vehicle was traveling too fast for the driver to negotiate a curve.

The car left the west side of the road, went over an embankment and fell about 100 feet. The driver and two passengers — who weren't wearing their seat belts — were all ejected.

A fourth passenger, a 20-year-old Boise man who was wearing a seat belt, walked away from the crash with a minor hand injury.

The investigation is ongoing, and the sheriff's office said it does not expect to release any new information Sunday.