A mother and her infant son were killed this weekend in a late-night off-roading excursion gone wrong. Hallie Lewis, 22, and boyfriend Taylor Brown, 21, of Orlando strapped their 1-year-old son Brason into a child seat to go along for the off-roading drive near Walt Disney World Saturday night. Around 10:30pm, the couple's Jeep got stuck in a muddy area and Brown exited the vehicle to try and pull it out of the muck with the help of a friend in a different truck. Tragic: Hallie Lewis and her 1-year-old son Brason were killed this weekend after their Jeep became stuck in mud during a late-night off-roading accident. Lewis pictured above in photos posted to her Facebook . Unresponsive: Hallie and her son became unresponsive when her boyfriend got out to try and rescue the stranded vehicle. Hallie and her baby boy pictured above with a man who appears to be her partner in photos posted to Facebook . While Brown was trying to rescue the stranded Jeep, Lewis and her baby boy became unresponsive inside the vehicle, according to a press release by the Florida Highway Patrol. Mother and son were transported to separate hospitals. Lewis was pronounced dead at Dr Phillips Hospital, while baby Brason battled for his life at Arnold Palmer Children's Hospital in critical condition. The baby was later pronounced dead Sunday evening. Authorities continue to investigate the deadly incident, but believe the mud may have clogged the Jeep's exhaust pipe, exposing Lewis and her son to carbon monoxide poisoning.
Hallie Lewis, 22, and boyfriend Taylor Brown, 21, took their 1-year-old son Brason for a late-night off-roading trip Saturday in Orlando . Around 10:30pm their Jeep became stuck in a muddy patch . While trying to rescue the stranded vehicle, Lewis and her baby became unresponsive . Mother and son were later pronounced dead at the hospital . Authorities say its possible mud clogged the exhaust pipe, exposing Lewis and her son to carbon monoxide gas .