As the possibility of a challenge increases, Umno Youth chief Hishamuddin Hussein has been warned to be cautious of 'enemies' within the wing who may take advantage of the situation.

"Unfortunately, there are indications that such a thing could be happening...so he must be aware of them...," said a party source who declined to be named today.

He said the recent statement by Umno information chief Megat Junid Megat Ayob that only the president and deputy president post would not be contested has opened the Pandora's box.

"This clearly indicates that the contest is now open for vice-presidency and Youth chief," added the source.

Asked about Hishamuddin's request to the media to stop speculating that Selangor Menteri Besar Dr Mohd Khir Toyo would challenge him for the post, the source replied:

"As far as I know, the campaign is still going on...In fact, we realised that several websites are exploiting the issue in support of a certain Umno leader..."

However, he declined to name the websites or the leader."Those who follow the developments closely would be able to identify the leader and the websites that I am talking about."

Supporters edgy

On the chances of someone challenging Hismuddin for the post, the source said it was a likely possibility.

In fact, he said, Hishamuddin's supporters have been uneasy following Mohd Khir's refusal to confirm or deny his intention to vie for the post when pressed by the media.

The source said the 'enemies' within have also caused concern among supporters of the current Youth chief.

Hishamuddin, who is also youth and sports minister, became the wing's chief in 2000.

Earlier, he was speculated to be aiming for vice-presidency but his supporters have been doubtful of his chances.