(Portland, OR)  --  Police say six people were arrested during a raid at a home in Southeast Portland.  Officials say drugs, ammunition, and a homemade bomb were seized during yesterday's raid at the home on Southeast 99th Avenue.  Police say the raid was a result of a month-long investigation of reported drug-dealing at the home.  Authorities say the six who were arrested were among 20 people who were inside the house at the time of the raid and initially detained.