Jen Bauer of the North Andover Pride Project said the note was dropped off on Monday morning on the front doormat.
Scrawled on the front side of the note, the message reads "A card from your dear friend." On the inside, a death threat featuring a homophobic slur and several printed-out swastikas.
The condo has a Pride flag hanging outside, which may be the reason it was targeted.
"The person that they did it to is just a really nice person with kids, so I can't imagine any other reason for them to have done it," said Bauer.
Though Bauer said it is possible the threat was dropped off by a "kid being edgy," she said the town needed to take the incident seriously. To that end, the North Andover Police are investigating and have narrowed down a time frame of when the note was dropped off.
It's the second hate incident in North Andover in just over a month, with swastikas and anti-Semitic graffiti discovered at the entrance of a trail in June.
WBZ's James Rojas (@JamesRojasWBZ) reports: