Andrew Walter's time in New England was brief. (Jonathan Wiggs / Globe Staff)

The Patriots have released backup quarterback Andrew Walter. The move was confirmed via email by Walter's agent, Jeff Sperbeck.

Walter's release leaves the Patriots with just Tom Brady and rookie Brian Hoyer at quarterback and could be a precursor to the acquisition of a veteran backup QB.

Walter was clearly agitated in the locker room following the Patriots' 38-27 victory over the New York Giants, a game in which he didn't play a snap as Hoyer went the distance.

"I'm ready every week," said a red-faced Walter, following the game. "As far as any other questions I think the guys who played should be the ones to answer the questions."

Walter then tried to end the interview and was asked one more question -- Do you feel with the time you've gotten you would be prepared to play in the regular season?

"It's my job to be a pro, so I'm going to leave it at that," said Walter before walking away.

The Patriots picked up Walter on Aug. 3 after he was released by the Oakland Raiders on July 30.

He played in two preseason games for New England, the opener against the Philadelphia Eagles, and last Friday against the Washington Redskins, when he came on for one series.

Walter was 5 of 9 for 62 yards with no touchdowns and no interceptions in exhibition game action for the Patriots.