"There are seven people. I would not like to name the seven people. But I think the seven people know who they are and then maybe you people (reporters) will also know who they are," Tengku Adnan told reporters at Parliament House.
Asked if Dr Mahathir "is part of investigations," Tengku Adnan said he would not comment but a committee was looking into it.
"After the technical committee have given their findings we will table it at the presidential council. If the council gives its approval, they will bring the matter to the disciplinary committee," explained Tengku Adnan.
"Once that process goes, we will suspend their membership and suspend whatever position they are holding," he said.
Tengku Adnan said that Umno has its constitution and ethics code for all members to adhere to.
"We can't take all these nonsense anymore. If you don't believe in the party's struggle, leave the party.
"We do not want people like anai-anai (termites) or duri dalam daging in our party," said Tengku Adnan.
He said the party was "sick and tired" of members who made statements that are not meant for the public.
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