BASTROP COUNTY, Texas (KXAN) -- A Hays Consolidated Independent School District bus carrying Tom Green Elementary pre-K students was involved in a serious crash Friday, resulting in at least two deaths, according to officials.
One of the deaths was a child on the bus, and the other was a man from a vehicle traveling behind the bus, according to the Texas Department of Public Safety.
The crash happened between the bus and a concrete truck near Mustang Ridge, the Texas DPS told KXAN. Officials said it appeared the concrete truck veered into the lane of the school bus on SH 21 near Caldwell Road.
DPS was unable to confirm if the concrete truck driver would face charges.
ATCEMS said it evaluated a total of 53 people involved in the incident. Four of the people were in critical condition and transported by helicopter, six people were taken to the hospital in ambulances with potentially serious injuries. Others were transported by other agencies as well, medics said.
In a news release from Hays CISD, the district said the students were returning from a field trip to the Bastrop Zoo. A total of 44 students and 11 adults were on the bus.
The district said parents of students who were on the bus were "notified directly from the campus."
On Friday afternoon, the Caldwell County Sheriff's Office said on social media SH 21 was shut down due to the crash.
Around 4:30 p.m., medics said all patients who required transport were taken from the scene.
Drivers should expect road closures in the area as first responders work at the scene.