The incident happened around Friday morning at the Walmart in the 19000 block of North Main Street.
In the surveillance photos you can see the two suspects robbing a guard who was returning to the vehicle. Another photo shows the two suspects getting away in a stolen truck.
The Pearland Police Department urges anyone with any information about this crime to contact police at 281-997-4231. You can also call Brazoria County Crime Stoppers at 800-460-2222, you will remain anonymous.