NASHVILLE (AP) - A report by the state's comptroller says former Tennessee Revenue Commissioner Reagan Farr approved millions of dollars in tax reductions for businesses without proper documentation or justification.

Republican Comptroller Justin Wilson said that during Farr's tenure from 2007 to 2010, there were 20 reductions, known formally as tax variances, according to The Tennessean (http://bit.ly/qBLcnn).

Tax variances are granted after corporations contest their tax bills with the state. Under state law, the revenue commissioner may issue such variances without oversight by other state agencies.

Farr, who was appointed by former Democratic Gov. Phil Bredesen, disputed the report's findings. He said it was motivated by politics, not tax policy.

A TBI investigation last year into how Farr's office handled sales taxes of some businesses found no criminal wrong-doing.