Ejiofor (undisclosed) was released by the Falcons from the non-football injury list Wednesday.
The Falcons signed Ejiofor to a reserve/future contract Thursday.
The Texans placed Ejiofor (knee) on injured reserve Friday.
Ejiofor sustained a torn anterior cruciate ligament at Friday's practice session, Aaron Wilson of the Houston Chronicle reports.
Ejiofor was placed on injured reserve due to an Achilles injury.
Ejiofor could be in line for increased snaps Week 3 against the Giants, Aaron Wilson of the Houston Chronicle reports.
Ejiofor had three tackles and one sack in Sunday's 20-17 loss to the Titans in Week 2.
Ejiofor (hamstring) is listed as active for Sunday's game against the Titans.
Ejiofor (hamstring) was limited in practice Wednesday.
Ejiofor (hamstring) won't play in Sunday's regular season opener against the Patriots.