Michael Jackson -- Security Concerns

The creditor's claims against Michael Jackson ... rolling, rolling in.

A security firm has filed legal papers in the probate case, claiming Jackson owed Steven Echols DBA Security Measures $261,169.

The firm is based in Las Vegas. According to the legal docs, the firm supplied 3 guards to Jackson in 2008 24/7 at $25 an hour.

The papers say in September, 2008 Jackson racked $119,000 in security costs. In October the bill was $99,000.