( CNN ) -- An accident on a swing ride at a Connecticut festival Sunday injured 13 children , some seriously , according to police . The ride `` apparently lost power causing the children on the ride to forcefully fall to the ground , '' police in Norwalk , Connecticut , said on the department 's Facebook page . Most of the injuries were minor , police said , but several were seriously injured , `` including two which appeared to be the most serious . '' Deyo Ello told CNN affiliate News 12 Connecticut that he watched in horror from the Ferris wheel line . `` It was a big boom , a big crash , three or four times over , '' he said . `` They slammed into the base of ( the ride ) , and then you heard a whole bunch of screaming . '' Ello tried to go on the ride with his daughter , but they were turned away when she did n't meet the height requirements . Seeing injured children lying on the ground after the accident was devastating , he told News 12 . `` If she was tall enough , that would have been her , '' he said , grabbing his daughter 's hands . `` My heart is broken . I 'm speechless . It ruined the day , you know . '' The accident occurred at Norwalk 's annual Oyster Festival . In a statement on its Facebook page , the Norwalk Seaport Association , the festival organizer , said the well-being of the children and families involved was its only concern . The festival temporarily shut down rides after the accident but reopened them Sunday evening after fire investigators and the ride company inspected them . `` We are cooperating fully with the investigating authorities , '' the association said . `` Any further questions should be directed to them . '' Stewart Amusement , which owns the rides , could not be immediately reached for comment . The company 's owner told News 12 Connecticut that he is cooperating with investigators . The swing ride was inspected by state officials on Friday and deemed to be safe , he said . After deadly roller coaster ride , more questions than answers . CNN 's Rick Martin contributed to this report .
Witness : CNN affiliate : The ride owner says that inspectors checked it on Friday . Witness : ` ` It was a big boom , a big crash ... and then a whole bunch of screaming '' It reopened after inspectors checked , organizers said . The swing ride apparently lost power , sending children ` ` forcefully '' to the ground .