The end of immunity after Zardari leaves office on September 8 will trigger the reopening of six corruption cases in the second week of next month, said the government official, who did not want to be named.
"Now these cases will be reopened and heard at accountability court No 1 in Islamabad," the official, privy to developments about these cases, told PTI.
The accountability courts hear cases registered by the National Accountability Bureau, the country's anti-corruption agency.
They were being heard in three anti-corruption courts in Rawalpindi but were put off indefinitely when Zardari was elected President in 2008.
However, the official admitted that the conviction of Zardari will be difficult as the main accused - Benazir Bhutto and her mother Begum Nusrat Bhutto - are dead and their names have been removed from the list of accused.
The official said another 15 people accused along with Zardari have already been acquitted during the past five years.
