Authorities have evacuated parts of a neighborhood and are searching a home in a Milwaukee suburb northeast of the Sikh temple where an unknown gunman killed six people Sunday.

Officers have roped off four blocks in a neighborhood with a mix of duplexes and single-family homes in Cudahy, about six miles from the temple.

The owner of one of the duplexes says authorities are targeting his property. Kurt Weins says authorities haven't told him why they're searching his duplex or whether it's related to the shooting. He says he rented the duplex's upper unit to a man about a month ago. He wouldn't identify the tenant.

Milwaukee County sheriff's spokeswoman Fran McLaughlin says the department's bomb squad also on the scene, but has no details about why it was called.