Memorial funds have been formed to benefit the families of "Lil" Chris Baker and Charles "Che" Still, both of whom were killed in the plane crash that took the lives of the plane's pilot and co-pilot and seriously injured Travis Barker and DJ AM. Baker was Barker's personal assistant and Still was his security guard.

A statement on the Web site of Barker's clothing line, Famous Stars and Straps, reads:

"It is with the utmost sympathy and regret that the Famous Family confirms the tragic loss of two of its most beloved members.

"Lil Chris Baker and Charles 'Che' Still fell victim to a fatal plane crash in South Carolina," the statement continues. "With heavy hearts we offer our deepest condolences to their family and friends. They will remain in our thoughts and prayers. The Chris Baker Memorial Fund and the Charles Still Memorial Fund have been established for the benefit of Chris' and Charles' families. Donations may be sent to the respective funds at the following address:

Memorial Fund
1840 South Milliken
Ontario, CA 91761."

Federal investigators are focusing on the possibility that a blown tire could have contributed to the crash. According to CNN, investigators found evidence that one of the jet's tires may have blown moments before takeoff at the Columbia Metropolitan Airport in Columbia, South Carolina.

National Transportation Safety Board spokeswoman Debbie Hersman said investigators listening to the jet's cockpit voice recorder heard a sound "consistent with a tire blowout."

The pilot and co-pilot told air-traffic controllers that they heard a tire burst and tried to abort the takeoff, according to a conversation on the voice recorder recovered from the wreckage, The Associated Press reports. "The crew attempted to reject the takeoff but was unable to stop the aircraft before it departed the runway," Hersman said.