(Salem, OR)  --  A second suspect has been arrested in a Salem mail theft investigation.  Forty-nine-year-old Brett Regimbal, of Salem, was arrested after a nearly seven-hour standoff with Salem Police SWAT.  Regimbal refused to talk with negotiators, so police sent a K9 into the house and he was taken into custody.  Investigators found stolen mail, counterfeit mail keys, evidence of identity theft and drugs.  Regimbal was booked into the Polk County Jail on charges including possession of a burglary tool, identity theft, and strangulation.  He had two outstanding warrants from Marion and Yamhill counties.