Last week Chris Brown's baby mama Nia Guzman's boyfriend King Ba was accused of forging checks in Houston [click here if you missed that].
According to insiders Chris plans to use Ba's criminal history against Nia in their custody battle…
Sources tell TMZ that Chris Brown will definitely bring up Ba's criminal record in his fight for joint custody when he and Nia meet in court two weeks from now.
Nia is asking for full custody with monitored visits for Chris while he wants joint custody.
Nia is also seeking $15k a month in child support. Chris currently pays $2,500 a month.
