Albert Campos was a pitcher on the rise for the Rockies after the 2010 season. Now he is no longer with the organization.

The Rockies released Campos on Monday, a surprising move for a 21-year-old Venezuelan righthander who had ranked as the No. 2 prospect in the Rookie-level Pioneer League in 2010 and was the Rockies' No. 13 prospect entering the 2011 season, though he dropped out of their Top 30 this year.

Multiple Rockies officials declined to comment on Campos' release. However, Campos had not reported to spring training in Arizona and was still in Venezuela at the time of his release. According to a source familiar with Campos, he was involved in a physical incident off the field. The details of what transpired aren't clear, though Campos' behavior has been an issue in the past. The release is not believed to have anything to do with issues over Campos' age or identity.

Campos, who is 6-foot-4, 220 pounds, originally signed with the Rockies as a 16-year-old when the 2007 international signing period opened on July 2. He spent the 2008 and 2009 seasons pitching in the Dominican Summer League, then made his U.S. debut in 2010 in the Pioneer League, where he had a 2.05 ERA in 88 innings with 68 strikeouts and 17 walks.

Campos pitched last year in low Class A Asheville, but he didn't pitch after July 3 for undisclosed reasons. He finished with a 5.19 ERA, 64 strikeouts and 19 walks in 86 2/3 innings.