Citigroup Inc on Monday sold $2.5 billion in 30-year bonds due July 15, 2039, said a market source familiar with the sale.

The 8.125 percent bonds were priced at 97.971 to yield 8.310 percent or 380 basis points over comparable U.S. Treasuries.

Citigroup Global Market was the sole lead manager on the sale.

(Reporting by Caryn Trokie; Editing by Dan Grebler)