Oscar Lee Harrison Jr., 33, was arrested Thursday and charged with failure to stop and render aid to a 68-year-old grandfather who suffered a fatal blow to the head A Texas grandfather has died after he tried to stop a tow truck driver from repossessing his SUV on Thursday, his distraught family have revealed. Alberto Nduli, 68, confronted the driver Oscar Lee Harrison Jr at 7:20am yesterday, after the elderly motorist was awoken by a neighbor warning that 'something was happening' to his truck. During the confrontation Nduli is said to have jumped atop the hood of his Lincoln Navigator, which had been winched to the towing vehicle, in a bid to stop Harrison from driving away. Regardless of the 68-year-old’s protests, police say Harrison switched on his engine and drove away at speed, knocking the grandfather off balance and causing him to fall to the ground below, suffering a fatal blow to his head. Harrison, 33, allegedly carried on driving instead of stopping to assist the ailing Nduli. He has since been arrested and charged with failure to stop and render aid. ‘[Harrison] didn’t ensure that this person was going to get the proper aid,’ said Sean Teare, head of the Harris County District Attorney's Office Vehicular Crimes Division. ‘He simply took the car and dropped it off, and that’s unacceptable.’ During the confrontation Nduli is said to have jumped atop the hood of his Lincoln Navigator, which had been winched to the towing vehicle, in a bid to stop Harrison from driving away. He later fell off and suffered a fatal blow to his head Family members of Alberto Nduli, who was fatally struck by a vehicle, grieve as Houston Police investigate the scene Harrison, 33, allegedly carried on driving instead of stopping to assist the ailing Nduli (pictured: Harrison's tow truck surrounded by police vehicles) Nduli, a father-of-seven, suffered a series of injuries in his fatal fall from the car to the concrete. Investigators say it’s not yet clear whether he was run over by either of the two vehicles in the incident, but an autopsy is expected to be conducted as early as Friday afternoon, which will help to provide a more comprehensive understanding of his injuries. According to police, Harrison intentionally fled the scene after Nduli’s fall. He returned hours later after dropping the SUV at an impound lot. ‘By his own admissions prior to returning to the scene, he knew there was an altercation,’ Teare said. ‘He knew the owner of the vehicle was there and involved in a crash. Whether or not he knew that individual lost his life really is immaterial as to whether or not there’s a failure to stop and render aid charge.’ According to police, Harrison intentionally fled the scene after Nduli’s fall. He returned hours later after dropping the SUV at an impound lot. He could face 20 years in prison, if convicted Investigators say it’s not yet clear whether he was run over by either of the two vehicles in the incident, but an autopsy is expected to take place early next week Relatives told KTRK Nduli believed Harrison had made a mistake towing his car, as the vehicle was parked in its assigned parking space outside of his apartment complex. The repossession was actually later revealed to be part of an outstanding debt of a title loan, in which the vehicle was listed as collateral to cover overdue payments. Family members revealed Nduli was working as a security guard and had lived in the US for more than decades before his death this week. ‘It’s emotional,’ Patricia Malewo told the Chronicle. ‘You're sleeping [next to] someone and they go outside to talk with a worker. Now, [he's] dead forever.’ Harrison faces a felony charge of failure to stop and render aid, carrying a maximum prison sentence of 20 years. Teare warned his charges could be upgraded to include murder, depending on what details emerge in their investigation over the coming days.All rights reserved for this news site dailymail and under his responsibility