CAGLARY -- Police are warning the public about a high-risk inmate who has been released into the city, who also has a history of hurling feces while in custody.

Curtis Dale Hill, 30, was released from Edmonton and in the Calgary area after serving a 10-year federal prison sentence for seven counts of armed robbery.

Police said Hill is opportunistic towards both men and women, particularly authority figures, and uses violence to achieve his goals.

On Oct. 31, 2008, about six months before he was due to be released on his warrant expiry, Hill launched his feces attack on a warden while locked up in the Edmonton Institution's segregation unit.

Sgt. Rich Veldhoen with the High Risk Offender Program said Hill's history of victimizing called for police to issue a warning.

"After reviewing Mr. Hills history including his violence he showed in the past ... and his history while incarcerated ... we had concern about his risk to the community at large," he said.

Members of the public are advised not to embark on any form of vigilante action if they come across Hill.