Deputy Prime Minister Ahmad Zahid Hamidi has poured cold water over claims that electoral reform group has been infiltrated by the Islamic State terrorist movement.

"There is no information (on that)," Zahid said briefly, when asked about the claims which was made by red shirts leader Jamal Md Yunos.

Jamal, who is also Sungai Besar Umno chief, had previously claimed to have received credible information that IS elements had crept into Bersih.