Driver hospitalized with life-threatening injuries after medical episode causes crash

A 51-year-old man was hospitalized in critical condition after police say a medical episode caused him to crash his vehicle into a concrete shoulder. Saturday in the 800 block of Nolan Street off of I-37.

The crash happened just before 5 p.m. According to San Antonio police, the man was traveling westbound on Nolan when he suffered a medical episode.