Boxer and entertainer Manny Pacquiao's tax troubles have doubled - he owes over $18 million (Gbp12 million) to America's Internal Revenue Service, according to new documents.

The fighter, who is also a rising political star in his native Philippines, has a huge tax debt back home - and now Irs officials want him to pay unpaid taxes from 2006 to 2010.

Tmz.com have obtained tax documents that show Pacquiao owes the U.S. Government $18,313,669 (Gbp12,209,112).

Officials in the Philippines are chasing the boxing champ for an estimated $50 million (Gbp33 million) in unpaid taxes, and they have reportedly frozen his bank accounts and placed a lien on one of his properties in Manila.