The Washington Redskins have released safety Kareem Moore, a day before they had to decide whether to activate him from the physically unable to perform list, according to a person with knowledge of the situation.

Moore had missed all of training camp and the preseason while working his way back from offseason knee surgery -- his second since August of 2010, and started this season on the PUP list. On Oct. 26, the Redskins’ medical staff cleared him to practice. The team had 21 days to evaluate him, and had until 4 p.m. Wednesday to decide whether to activate him.

Washington’s options included adding him to the 53-man roster, releasing him or placing him on a season-ending injured list so he could continue his rehab.

Moore had said last week that he wasn’t sure whether the team would activate him. Defensive coordinator Jim Haslett said last week that if starter Oshiomogho Atogwe, who was hampered by knee and toe injuries, was unable to play, the team would consider activating Moore for the Dolphins game. But Atogwe dressed for the game and Moore remained inactive.

Moore is in his fourth NFL season out of Nicholls State. Last season he started 11 of 12 games and recorded 64 tackles and an interception.

The Redskins added Atogwe this season via free agency, re-signed fellow safety Reed Doughty to a three-year contract, and drafted safety DeJon Gomes in the fifth round out of Nebraska.