Updated at 9:57 p.m. Wednesday.
A collision at a Poway intersection critically injured four people Wednesday afternoon.
A fifth person was less severely injured in the two-vehicle wreck, which was reported about 2:30 p.m. on Twin Peaks Road in Poway, sheriff's Lt. Kelly Martinez said.
Emergency crews had to free one person from the wreckage. An air ambulance was called in to take at least one of the most seriously injured patients to a trauma center, while several others were transported by ground ambulance.
A green Ford Escort driven by a 17-year-old boy was going west on Twin Peaks Road with three teenage passengers when he swerved over the center line into eastbound traffic, striking a white Toyota Prius, said sheriff's Cpl. Todd Murphy.
The Escort then slid sideways into a maroon Ford F-150 driven by a woman with her 12-year-old sister as a passenger. The Escort driver and his 15-year-old brother were critically injured with major head trauma.
The other drivers had minor injuries, Murphy said.
Stay with Patch for more information as it becomes available.