San Marcos police are trying to identify a bicyclist that was hit and killed by an 18-wheeler early Monday morning.
Police say the truck driver was approaching the top of a hill along a dark stretch of the I-35 access road near the Posey Road exit when he spotted a cyclist riding in the middle of the roadway.
According to police, the driver hit the brakes but could not stop in time to avoid hitting the bicyclist.
The victim is described as a white male in his 30s or 40s, about 5-feet-8-inches tall, wearing a grey t-shirt and grey shorts.
If you know the victim, you are asked to call police.
No charges have been filed against the driver.