Travis Barker, DJ AM Critically Injured in Plane Crash

Rocker Travis Barker and DJ AM were among the individuals aboard a Learjet that crashed upon takeoff from a South Carolina airport today.

This morning's accident has already killed four people and critically injured two others - presumably Barker and DJ AM - NBC News reports.

Federal Aviation Administration spokeswoman Kathleen Bergen said the Lear 60 – bound for Van Nuys, Calif., with six people aboard – departed shortly before midnight Friday, when local air-traffic controllers reported seeing sparks.

The plane went off the runway and crashed on a nearby road.

Travis Barker (left), an ex-drummer for the rock band Blink 182 and the star of the MTV reality show Meet the Barkers, had performed at a Friday-night event with former Jane's Addiction frontman Perry Farrell, singer Gavin DeGraw and DJ AM (right).

Barker was reportedly transported to a burn treatment center in nearby Augusta, Georgia, and was listed in critical condition as of 9:30 a.m. Saturday morning.

Hospital officials also confirmed that Nicole Richie's ex-fiance, DJ AM (real name: Adam Goldstein), was also admitted to the burn unit, and is in critical condition.

UPDATE #1: Neither Ferrell nor DeGraw were in the plane, their representatives told the Associated Press. We hope Barker and Goldstein recover fully and quickly.

UPDATE #2: Beth Frits, spokeswoman at Joseph Still Burn Center, tells CNN that both of the men have "extensive burns." Barker has been burned from his waste down while DJ AM's face was severely burned. Both are expected to survive.

UPDATE #3: A coroner has identified the four deceased victims in the crash: Pilot Sarah Lemmon, 31, of Anaheim Hills, Calif.; co-pilot James Bland, 52, of Carlsbad, Calif.; Chris Baker, 29, of Studio City, Calif., who was Travis Barker's assistant; and Charles Still, 25, of Riverside Calif., who was Travis' bodyguard.