Six Flags Closes Nitro and Eight Other Coasters After Goliath Death Six Flags has temporarily shut down nine roller coasters, including Nitro at Great Adventure in New Jersey, after a 42-year-old teacher was ejected from the Goliath coaster at Six Flags Over Georgia and died. Six Flags has temporarily closed nine roller coasters across six North American theme parks, including the Nitro hypercoaster at Six Flags Great Adventure in Jackson Township, New Jersey, after a fatal ejection on the Goliath at Six Flags Over Georgia. The victim was Hassan Jihad Ibn Kariem, 42, of Atlanta. He was an IT manager at Wesley International Academy and was described by his sister as a beloved teacher who had beaten cancer and survived a car fire a month earlier. Kariem died Monday after he was ejected from the Goliath roller coaster at the park in Austell, Georgia. Witnesses said he slipped from his safety restraint, slammed into fellow riders and then fell to the ground below.Police found Kariem unresponsive and not breathing beneath the ride. The Cobb County Police Department's Major Crimes Unit is investigating. Preliminary findings are based on witness and employee interviews. Six Flags said it closed similar attractions across its parks out of an abundance of caution.Six Flags Closes Rides From Bolliger Mabillard ManufacturerThe company said the safety of guests and team members remains one of its highest priorities. The closures affect major thrill rides at several parks beyond Great Adventure. Nitro was designed by Swiss manufacturer Bolliger & Mabillard, the same company that built Goliath. That manufacturer built eight of the nine closed coasters.Some of the shuttered rides have safety belts as a backup to the lap restraints. Travel blogger Nathan Kerney noted the design difference. It remains unclear whether the lack of seatbelts played any role in the deadly mishap. Six Flags has not provided a timeline for when Nitro or the other eight paused attractions will reopen.The rides will remain closed indefinitely as the Georgia investigation continues. Great Adventure's Nitro is a hypercoaster with a 215-foot drop that offers a distant glimpse of Philadelphia. The closure comes during the park's annual autumn rush. The Fright Fest event at Six Flags Great Adventure runs through Halloween, but it is unclear if Nitro will be back before the festivity ends.Hypercoasters Lack Regulation And Pose Higher RisksThe ride closures come weeks after Magic Mountain in California permanently retired its X2 roller coaster in late September. That followed claims from more than 100 riders about the attraction. Witnesses said the Goliath ride was shut down for maintenance just hours before Kariem's fatal fall. Experts have warned that hypercoasters are not regulated and are more risky than ever.Kariem was a member of a roller coaster enthusiasts Facebook group. Six Flags did not reply to a request for comment on the matter. Information for this report came from FOX News, the Cobb County Police Department, FOX 5 Atlanta, the New York Post and previous reporting.