The Fort Bend County Sheriff's Office said the fatal incident happened on Gaston Road near Katy Flewellen at about 8:12 a.m.
Investigators learned that a bicyclist was going north on Gaston Road when he was hit by a U-Haul truck. The victim was flown to the hospital, where he died from his injuries.
Deputies later identified the bicyclist as an off-duty sergeant with Harris County Precinct 2 Constable's Office, Manuel Edwards, who was 55 years old.
The driver of the U-Haul truck was identified as 63-year-old Earlie Gibbs, who the sheriff's office says was charged with failure to stop and render aid and intoxication manslaughter.
Pct. 2 confirmed Sgt. Edwards worked previously with Harris County Pct. 5.
In 2016, ABC13 did a story on Edwards, who was working traffic control when a mother with a choking baby pulled up to him on the side of the road for help.
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The Pct. 2 captain told ABC13 that Edward's duties involved working on Pct. 2's toll road division and DUI enforcement.