Paul Hoynes has the complete details on how the police caught on to the suspicious package, including the addressee:
Police said they searched the house after officials at the Rocky River post office said they discovered two packages that smelled like marijuana. After a police dog indicated there could be an illegal substance in them, law enforcement got a search warrant.
[snip]
According to the report, at around 12:30 p.m. Tuesday an undercover officer dressed as a postal carrier delivered the packages, addressed to Brody Baum at the Parklane address. Brody is the name of the Perez dog. Baum is Melanie Perez's maiden name.