While the Orioles were busy getting lit up by the Red Sox on Tuesday evening, fans of the Birds were up to no good in Baltimore.

Sometime on Tuesday night, the aluminum No. 8 outside Camden Yards — a monument in honor of Cal Ripken, one of the team's legendary players — was stolen. Four suspects were arrested two hours later and the monument was recovered, police told ESPN.com.

Surveillance cameras caught the men removing the monument and escaping with it in the bed of their pickup truck. After police recovered the monument, they took photos of it and examined it for evidence before returning it to the Orioles. Unfortunately, it may need to be replaced altogether.

"I don't know if they'll be able to reuse it," police spokesman Anthony Guglielmi told ESPN.com.

Orioles spokeswoman Monica Barlow told the Web site she did not know when the monument would be reinstalled outside Camden Yards. Ripken had no comment on the matter.

Ripken's No. 8 is one of a series of aluminum monuments depicting the retired numbers of Orioles legends. It joined Brooks Robinson's No. 5, Jim Palmer's No. 22 and Eddie Murray's No. 33.