Bosses at CBS have come under fire for airing an episode of Melissa McCarthy's hit comedy series Mike & Molly which has offended members of the Native American community.

During a recent episode, McCarthy's TV mother-in-law Peggy, played by Rondi Reed, made a joke about Native Americans, quipping, "Arizona? Why would I move to Arizona? It's nothing but a furnace full of drunk Indians." 

The gag has not been well received by officials of the Navajo Nation, a Native American-governed territory covering portions of northeastern Arizona, southeastern Utah and northwestern New Mexico, and they have demanded an apology from CBS executives for the offensive remark, even though a representative for the community insists it could be too little too late. 

The spokesperson tells TMZ.com, "For a show like this displaying us in a negative light is just unacceptable, they are taking a shot at the entire state of Arizona and its indigenous people. 

"An apology would be the right thing to do, but some damage done can't be fixed in an apology."