Former prime minister Dr Mahathir Mohamad and former transport minister Chan Kong Choy have denied receiving political funding from Ultra Kirana Sdn Bhd (UKSB).

This followed claims by a witness in the corruption trial of former deputy prime minister Ahmad Zahid Hamidi.

Mahathir told reporters in Langkawi yesterday that the accuser should show proof to back his claims.

He gave an example of how the Pakatan Harapan administration showed the flow of money to Najib Abdul Razak's bank accounts.