WASHINGTON (Agencies) - Keeping up the pressure on Pakistan to release its jailed diplomat, the US is going ahead with a key meeting on Afghani-stan, sans Islamabad. Bilateral talks between the US and Afghanistan in the areas such as security and agriculture will be held, the Afghan Embassy spokesman Abduljalil Ghafoory said here. The meeting to be held here from February 23 to 25 was to be a trilateral affair involving top leaders from US, Pakistan and Afghanistan. The Afghan delegation would be led by its Foreign Minister Zalmai Rassoul and is expected to include a number of other high-ranking cabinet ministers. The high-ranking officials of Afghanistan and the United States will combine dialogue on advancing security and agriculture with a focus on key areas of mutual cooperation, seeking to deepen links between the countries, Ghafoory said. The US government Saturday said that the trilateral meeting originally planned for those dates had been postponed to an unfixed date due to political changes in Pakistan. The postponement came amid mounting tensions between Washington and Islamabad triggered by the arrest of a US citizen. The Pakistani police Friday rejected the US consulate employees self-defence claim and accused him of murder. The US has repeatedly said that Davis should enjoy diplomatic immunity. The latest developments could further deepen the already strained US-Pakistan relations amid Washingtons renewed efforts to tackle extremism in Pakistan and curb Taliban activities in Afghanistan. On Saturday, acting spokesp-erson of US Embassy Courtney Beale had said that the three-party meeting between the US, Pakistan and Afghanistan was postponed due to cabinet reshuffle in Islamabad. Talking to a Pakistani private TV channel, she said that US ambassador several times talked to former FM Qureshi on the issue of Davis. She said they have not sought internet and other facilities for Davis in the prison.