TICKFAW - A 19-year-old mother and her 7-month old son were killed in a fiery crash on LA 1065 Christmas Eve.

According to Louisiana State Police, the crash occurred around 8:45 p.m. Sunday night on LA 1065 near the intersection of LA 1064.

The driver at fault, 36-year-old Jillian Pamela Ramsay of Loranger, was impaired and fleeing the scene of an earlier crash when she crashed into the young mother and her son, according to State Police.

Ramsay was driving a 2015 Nissan Altima northbound on LA 1065 (N. Cherry Sreet) when she was involved in a crash and fled the scene, continuing north on LA 1065 at a high rate of speed.

A 2005 Dodge Stratus driven by 24-year-old Ryan Joseph McCollum Sr. of Tickfaw had just entered LA 1065 and was traveling at a slow speed. McCollum's vehicle was occupied by his fiancée, 19-year-old Shelly Mulkey, and their 7-month-old son Ryan McCollum Jr.

As Ramsay crossed the intersection of LA 1064, her Altima approached McCollum's vehicle at a high-rate of speed, according to State Police.

Ramsay swerved slightly to the right and crashed into the rear of McCollum's vehicle as a result. McCollum's gas tank was ruptured in the collision, resulting in both vehicles catching fire.

Ramsay suffered only minor injuries and was able to exit her vehicle.

Witnesses at the crash scene removed McCollum and Shelly Mulkey from their vehicle and performed CPR on Mulkey.

McCollum's vehicle quickly became engulfed in flames and the 7-month-old remained inside the vehicle.

The Tangipahoa Parish Fire Department arrived on the scene and extinguished both fires. Both Ryan McCollum Jr. and his mother, Shelly Mulkey, were pronounced dead at the scene by the Tangipahoa Parish Coroner's Office.

The two drivers were transported to Northoaks Health Systems by Acadian Ambulance.

Blood was drawn from both for toxicological analysis and Troopers determined Jillian Ramsay was impaired at the time of the crash. She was treated and released from the hospital. After being released, Ramsay was booked into the Tangipahoa Parish Jail on two counts of vehicular homicide, hit-and-run and careless operation.

Safety restraint use for all involved is unknown, according to State Police. The crash investigation is ongoing.