The video above is ABC13's 24/7 livestream.
Investigators said four men were at an off-road park located at 1927 Gulf Pump Road Saturday night when an ATV got stuck in mud after running out of fuel.
One of the men walked away, and the three others, aged 17, 21, and 22, stayed behind with the ATV and hadn't been seen since.
About 45 minutes after announcing the disappearance Sunday morning, Harris County Sheriff Ed Gonzalez tweeted that the three had been found safe.