JOHANNESBURG - Former president Jacob Zuma's spy claims could destabilise the party.
That's according to its Secretary-General, Ace Magashule.
He says the ANC was indeed infiltrated.
The party is now under pressure to investigate Zuma's allegations against at least two cabinet ministers, made during his testimony at the Zondo commission.
"In any revolution, there is counter-revolution, spies and informers have been there during the years of struggle.
"As for the comrades mentioned here to be spies or informers, I don't know."
Zuma's testimony will continue on Wednesday.