US president-elect Donald Trump on Tuesday said there should be no more prisoner releases from the US military detention facility at Guantanamo Bay, Cuba. "These are extremely dangerous people and should not be allowed back onto the battlefield," Trump wrote on Twitter. President Barack Obama has sought to close the prison since he entered office in 2009, but has been unable to carry out the plan in the face of opposition from Congress. Obama announced renewed plans for closing the facility earlier this year and in November indicated he would release more prisoners in the final weeks of his term in office, which ends on January 20. "I think I would expect at this point additional transfers to be announced before January 20th," White House Press Secretary Josh Earnest told a media briefing on Tuesday. Earnest said Trump's attitude towards the issue would not factor into the Obama administration's decisions on transfers in Obama's final days in office. "He'll have an opportunity to implement the policy that he believes is most effective when he takes office on January 20th," Earnest added. Human rights organization Amnesty International called for a rally in Washington on January 11, Guantanamo's 15th anniversary, to remind Obama of his promise to close the facility.