Outgoing Rep. Max Rose says he's exploring a campaign for the New York City mayor's office.

In at tweet Sunday, Rose confirmed the news, writing, "Our city used to be where underdogs triumphed and anyone could build a better future. Yet that NY is slipping away, and for others it's gone. If you believe NYC is worth fighting, join our team!" 

The announcement comes after Rose lost his reelection bid last month to Nicole Malliotakis in the 11th Congressional District.

This is a developing story.