Officials at a leading U.S. family organisation have urged federal agents to investigate reports suggesting a controversial new MTV series features underage actors and actresses in sex scenes. 

Parents Television Council bosses are disturbed by child pornography allegations made against racy new series Skins, which has been adapted for the U.S. after becoming a hit in Britain. 

In a strongly-worded letter to the the U.S Department of Justice, the PTC writes, "In addition to the sexual content on the show involving cast members as young as 15, PTC counted 42 depictions and references to drugs and alcohol in the premiere episode." 

TMZ.com reports MTV executives have already met to discuss the issue.

TMZ also reports that fast food giant Taco Bell has pulled their ads from promoting the show. Apparently Skins is, ahem, too spicy for them (sorry, bad joke - it was TMZ's, not ours.)

Skins Gallery