VON ORMY, Texas - A Bexar County Sheriff's Office deputy was injured after an 18-wheeler struck his patrol vehicle early Saturday morning.

BCSO said the deputy was sitting in his vehicle in the northbound lane of the 13400 block of I-35 south when the crash happened around 4:30 a.m.

Along with the deputy, three other people were injured in the accident.

One adult was injured and was transported to University Hospital in critical condition with possibly life-threatening injuries, according to BCSO. The other two in the accident are in good condition.

Emergency crews transported the deputy to University Hospital in stable condition. Officials said he is expected to go home later Saturday.

A diesel fuel spill was also reported during the crash.

Officials are asking people to minimize unnecessary travel and to stay home if possible. IF you do have to leave your home, make sure you are mindful of the slick roads.