US Secretary of State Colin Powell has demanded urgent security reforms from the Palestinian prime minister, as he seeks to put "roadmap" for peace back on track. Violence between the two sides has killed about 60 people since the US-backed peace plan was launched earlier this month. Speaking after talks in Jerusalem with Israeli Prime Minister Ariel Sharon, Powell called the Palestinian militant group Hamas an "enemy of peace". The secretary of state - who is in the region to try to salvage the beleaguered peace plan - is now to meet Palestinian Prime Minister Mahmoud Abbas, also known as Abu Mazen.