HARRIS COUNTY, Texas (CBSDFW.COM) – Two children, ages 1 and 2, are in the hospital with severe burn injuries after a road rage shooting near Houston set off fireworks inside their vehicle, authorities say.

Authorities told KTRK that the incident happened at around 9:30 p.m. Thursday after the children’s father got into an argument with the gunman. The suspect pulled out a gun and fired at the family’s vehicle as the father tried to drive away.

READ MORE: Frisco Memorial Girls' And Boys' Basketball Teams No Longer The New Kids On The Block

Authorities said the gunfire set off fireworks inside the family’s vehicle, causing a major fire. The fireworks had just been purchased before shooting happened.

READ MORE: Loophole In Federal Surprise Medical Bill Ban Leaves Patients At Risk Of High, Unexpected Ambulance Bills

The two children were taken to the hospital by air ambulance in critical condition with severe burns. The parents were taken to the hospital with burn injuries.

Investigators told KTRK that good Samaritans helped rescue the family from the fire and took them to an urgent care clinic before the children were taken to the University of Texas Medical Branch at Galveston.

MORE NEWS: 1 Dead, 1 Injured After Shooting In Forest Hill

Authorities are continuing to search for the suspect and any persons of interest.