Pal: Nicole Richie "Is in Shock" Over DJ AM

Nicole Richie "is in shock" after her ex fiance DJ AM and pal Travis Barker were critically injured in a jet crash upon takeoff from a Columbia, South Carolina, airport after midnight Friday. Four people - including Barker's assistant - were killed. "She wishes only the best for Adam and hopes he recovers from this," a pal tells Usmagazine.com . "She's horribly upset about the people who died." Her beau Joel Madden "knows Travis and also feels terrible and hopes they recover. This is terrible news for both of them." Meanwhile, Shanna Moakler , Barker's ex, "is devastated and in total shock. It just hit her," another source tells Us . The pal says she is hopping in a plane to be by his side. Says the source: "Shanna is freaking and in panic mode right now." (link)