Driver in Wrong-Way Crash Was on 'Girls' Night Out' Olivia Carolee Culbreath, 21, just had a baby last month By Evann Gastaldo, Newser Staff Posted Feb 10, 2014 6:42 AM CST 67 comments Comments Officials investigate the scene of a multiple vehicle accident where 6 people were killed on the westbound Pomona Freeway in Diamond Bar, Calif. on Sunday morning, Feb. 9, 2013. (AP Photo/San Gabriel Valley Tribune,Watchara Phomicinda) (Newser) – Olivia Carolee Culbreath, the 21-year-old arrested in a wrong-way crash in California that killed six people yesterday, had just had a baby late last month and was on a "girls' night out" when the horrific collision occurred around 4:40am Sunday in Diamond Bar, one of her friends tells the San Jose Mercury News. Two of the women who died, both 24, had been riding in her car, the Los Angeles Times reports; NBC Los Angeles says one of those women was Culbreath's sister. Culbreath is suspected of drunk driving; a witness at the scene spotted a 24-ounce "tall boy" beer can in the front seat of the Camaro she was driving. Witnesses estimate the Camaro's speed could have been more than 100mph when it hit a Ford Explorer head-on. The Explorer then hit a Ford Freestyle, whose driver suffered minor injuries; authorities are still working to determine which victims were in which car, but NBC LA says the other victims were a family of four. Culbreath is currently in critical condition in hospital lock-up and appeared to be sedated yesterday afternoon; authorities had not yet interviewed her. The other wrong-way crash early Sunday killed three University of South Florida students and one former student who were driving in a Hyundai Sonata in Tampa when it was hit by a Ford Expedition, the Orlando Sentinel reports. All of the Sonata passengers, members of the Sigma Beta Rho fraternity ranging in age from 20 to 22, were killed, as was the driver of the Expedition, WFTV reports.