Pakistan's ambassador to the US Husain Haqqani did not write a letter seeking American help against the country's powerful army but was involved in mobile phone communications with a Pakistan-American businessman at the centre of a controversy over a secret memorandum, interior minister Rehman Malik said on Saturday.
"This was not a letter, neither from presidency nor from any government organisation," Malik told reporters on the sidelines of an event in Islamabad.
"This is communication through SMS by two individuals. One is an American national and second is our Ambassador," he said.
The information available indicated there was "an exchange of SMS and Blackberry messages", he added.
"Now we have to see that who initiated these (messages).. And if his (Haqqani’s) point of view was not satisfactory, then it is clear (the matter) is open for investigation," Malik said.
Both Malik and Prime Minister Yousuf Raza Gilani said Haqqani should be given an opportunity to explain his position.
Malik said no one could be condemned without being heard.
Talking to reporters in Peshawar, Gilani said the matter of the secret memo would be taken to its "logical end" while protecting national interests though it would be "unjust and against the norms of justice to jump to conclusions without listening to the point of view" of Haqqani.
Haqqani has been summoned to Islamabad to explain the issue to the country's leadership, he said.
Gilani added that there was no problem for his coalition government as it had a "working relationship" with other national institutions.