Okert signed a minor-league contract with the Astros on Nov. 5.
The Twins outrighted Okert to Triple-A St. Paul on Monday.
The Twins designated Okert for assignment Saturday, Betsy Helfand of the St. Paul Pioneer Press reports.
The Twins reinstated Okert (personal) from the bereavement list Monday.
The Twins placed Okert (personal) on the bereavement list Monday.
Okert allowed one hit and one walk while striking out one over a scoreless inning in Saturday's 5-1 victory over the Mariners.
Okert earned the save in Thursday's 3-2 win over the Dodgers, allowing one hit while recording a strikeout in a scoreless inning.
Okert threw a scoreless ninth inning in Tuesday's win at Milwaukee with a walk and three strikeouts. He would have be in line for a save had the Twins not scored in the top of the ninth inning. "At that point in the game, Okert with the experience was probably the answer," manager Rocco Baldelli told the Minneapolis Star Tribune.
The Twins acquired Okert from the Marlins on Sunday in exchange for utility player Nick Gordon, Craig Mish of the Miami Herald reports.
Okert (3-1) took the loss Sunday against the Orioles, coughing up three runs on four hits in only one-third of an inning.