Christina Aguilera attacks 'The Voice' contender, Tony Lucca

Christina Aguilera at The Elder Scrolls V: Skyrim Video Game Launch. (Los Angeles, CA)

With rumors already swirling that Christina Aguilera is less than pleasant to work with, one The Voice contestant is adding fuel to the fire.

Tony Lucca was recently the victim of one of Aguileras negative rants after he sang The Heavys How Do You Like Me Now. The voice coach allegedly acted as more of a foe than a friend. Lucca tells People, I was just scratching my head like: 'Really, you have to keep going on with this?' All of the other coaches have been pretty respectful about each other's choices. But now it seems like she's just flat-out trying to get me out of here."

Aguilera has reportedly been needling Lucca, who is on Adam Levines team, for weeks. She once called Lucca one dimensional.

People reports that Aguilera has also taken an indirect swipe at him while she critiqued Katrina Parker, saying, I just encourage Adam to really look at you. I know that probably the obvious, predictable choice for Adam would be to be swayed towards [Lucca]. But I'm telling you, take a look at Katrina Parker because she's a star."

More complaints about Aguilera's attitude were voiced last week when The Wanted claimed that she wouldnt even look at them and that she just sat there. The boy band took to a NYC radio station to blast Aguilera, calling her a bi**h.* They later retracted their comments when approached by TMZ.