The couple was trying to sell a mattress on the "OfferUp" app, an online marketplace.
The sheriff's office said the men answered the ad and came to the couple's apartment on Pruitt Road. When they arrived, they pulled out a gun and took $370 in cash. They also allegedly drove off with the mattress, box spring and a printer.
The men were seen driving down I-45 in a green, 1996 GMC Sierra truck with Texas license tag FMF-4287.
If you have any information about the crime, you're asked to call Crime Stoppers.
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