A Palestinian official said on Wednesday that US Secretary of State John Kerry hesitates to put forward his plan for the Middle East peace process for fear of failure.

The official, who spoke on condition of anonymity, attributed Kerry's hesitation to Israel's rejection of the Palestinian demands, including full suspension of settlement construction and endorsement of the two-state solution.

Kerry was expected to present his plan on June 8, but he demanded more time and postponed a visit to the region indefinitely, the official told Xinhua.

US President Barack Obama assigned Kerry to work on reviving the peace talks between Israel and the Palestinians, which came to a full halt in 2010 due to Israel's refusal to freeze settlement construction.

Kerry focuses his efforts on making progress regarding the issues of borders and security by presenting his ideas to each side. The Palestinian side has responded with Kerry's plan, but Israel has not, the official said.