The reality TV star's brother was taken into custody after he allegedly broke a restraining order keeping him away from his former girlfriend, Hunter Salomon, the daughter of Paris' sex tape partner Rick Salomon.

Law enforcement sources tell editors at TMZ.com that during his arrest, Conrad was so agitated that cops called in Rick, who accompanied police officers into the building and helped calm his son down.

The website reports that Conrad, 21, has been charged with trespassing.

Hunter Salomon dated Conrad several years ago, and last month (May15), she was granted a temporary restraining order to keep him away from her after he allegedly began showing up at her home.