New Planet?

Some astronomers are claiming that there is a planet hidden in our outer solar system. John Matese and Daniel Whitmire of the University of Lousiana-Lafayette have been claiming since 1999 that this planet, which they have named planet Tyche, is four times bigger than Jupiter and is located in the outer region of the solar system called the Oort cloud. Many astrologists believe that planet Tyche probably is not there. Matese and Daniel's case is that comets that originate there tend to have strange orbital patterns.
"There's evidence that some Oort cloud comets display orbital peculiarities," Matese said. "We're saying that perhaps the pattern is indicative that there's a planet there."
Scientists like Hal Levison disagree with Matese.
"What Matese claims is that he sees an excess of comets coming from a particular place, which he attributes to the gravitational effects of a large planet in the Oort cloud. I have nothing against the idea, but I think the signal that he claims he sees is very subtle, and I'm not sure it's statistically significant," Levison told Life's Little Mysteries.
Is there a new planet lurking out in the deep that is throwing off peculiar comets or is it just the random works of the universe?

Wolchover, Natalie. "FoxNews.com - Astronomers Question Existence of Solar System's Mystery Planet Tyche." FoxNews.com - Breaking News | Latest News | Current News. 16 Feb. 2011. Web. 01 Mar. 2011. .