Noting that ISI as an organisation does not support terrorism, Mr Lapan said some elements within the intelligence agency are supporting terrorists.
“The ISI has done a great deal in fighting terrorism. Some have said they probably have killed more terrorists than any other organisation. But we also have some concerns with the strategic focus of the ISI," Mr Lapan said, adding that Pakistan Army chief General Ashfaq Parvez Kayani is aware of these concern and shares it.
The Pentagon spokesman said there is no word from Pakistan yet as to when the Torkham Gate would be reopened, which is an important supply line for NATO and US troops in Afghanistan.
The crucial supply line was closed by Pakistan officials in the aftermath of two Pakistani killed in NATO air strike on Sep 30 on the Af-Pak border.
Mr. Lapan acknowledged that the blockade of supply line has increased security threat in the border, as it was very much evident in increasing number Taliban attacks.
“The Pakistanis understand that we would like to see these gates open as soon as possible. We also understand that ultimately it is their decision, they take the security situation into consideration," he said.