POLICE are investigating allegations that a senior child protection worker groomed a teenager in her care for a sexual relationship and inappropriately touched the minor while she was in a secure facility for the state's most vulnerable children.

The Department of Human Services is set to investigate the allegations, which date back to 2005 but only emerged in April. The worker, who went on to be a senior child protection manager at Wesley Mission, was stood down on Friday.

According to several sources, the department is understood to be furious