The Internal Revenue Service has placed a tax lien on Rudy Giuliani’s Florida condo in another sign of the longtime Donald Trump ally’s growing financial difficulties.

The condo, part of a complex built in 1969, is located around three miles north of the former president’s Mar-a-Lago golf resort in Palm Beach, Florida.

Giuliani owes about $550,000 in income taxes to the IRS, according to a filing signed in late August. That’s in addition to a variety of legal bills that are reportedly mounting as the former New York City mayor faces criminal election interference charges in Georgia and other legal woes.