A 6-year-old boy is fighting for his life following a Christmas Eve accident that ended with his father behind bars.
Pharr police arrested 31-year-old Pedro Ibarra on an intoxication assault charge on Monday evening.
Investigators told Action 4 News that Ibarra was behind the wheel of a car that rear-ended an 18-wheeler.
The accident happened on the frontage road of U.S. Highway 281 near Nolana Avenue.
Police said Ibarra TMs 6-year-old son was trapped inside the car and now remains hospitalized in critical condition.
Investigators said Ibarra refused to submit to a breathalyzer but was required to take a blood test.