Johnson was reportedly last seen Monday leaving his home around 5 p.m., and did not attend that day’s practice.
The Aggies upset former No. 1 Alabama Saturday, and the team was given the day off Sunday, which was the last time anyone had seen Johnson.
University police stated Johnson might have left to visit his high school in the Dallas area.
There has been no word from Johnson as to why he went missing, but according to ESPN campus police have scheduled a news conference for Thursday morning.
Johnson has appeared in 10 games this season, making 30 catches for 339 yards and one touchdown.