An 18-year-old Texas man faces a slew of charges including six counts of intoxication manslaughter in connection with a head-on December crash that left six people dead in Johnson County, according to authorities.

Luke Resecker was southbound on U.S. Highway 67 outside Cleburne when his 2014 Chevy Silvervado drifted into the northbound lane in a no-passing area and collided head-on with a northbound Honda Odyssey, according to the Texas Department of Public Safety.

The Dec. 26 crash killed six people, including two children: Odyssey driver Rushil Barri, 28; Naveena Potabathula, 36; Nageswararao Ponnada, 64; Sitamahalakshmi Ponnada, 60; Krithik Potabathula, 10; and Nishidha Potabathula, 9.

The group was headed to see animals at Fossil Rim Wildlife Center when the tragedy struck, loved ones told CBS News Texas.

A passenger in Redecker's truck was also injured. 

Texas DPS has now charged Resecker with six counts of intoxication manslaughter, two counts of intoxication assault, possession of a controlled substance and possession of marijuana. 

Resecker was released on a $50,000 bond with a restriction of monitored home confinement, CBS reported Tuesday. DPS said the 18-year-old was not medically fit to be booked into the Johnson County jail.

It was not immediately clear whether Resecker had entered a plea or gotten an attorney to speak on his behalf.