Aung San Suu Kyi is to be stripped of her Freedom of Oxford award because of her response to the Rohingya crisis.

Burma's de facto leader, who completed her undergraduate degree at Oxford University, was granted the honour in 1997 for her "struggle for democracy".

But Oxford City Council voted unanimously to support a motion that said it was "no longer appropriate" to celebrate Ms Suu Kyi, who has come under fierce criticism for inaction in the face of reported atrocities against Rohingya Muslims in Burma's Rakhine state.

More than 500,000 people have fled across the border to Bangladesh since late August.

Oxford's reputation is “tarnished by honouring those who turn a blind eye to violence”, local councillor and Labour party member Mary Clarkson said in a speech proposing the motion.

“While the UN calls the situation a 'textbook example of ethnic cleansing', Aung San Suu Kyi denies any ethnic cleansing and dismisses numerous claims of sexual violence against Rohingya women as 'fake rape'”, Ms Clarkson said.

In a speech in late September, her first public statement on the subject since the exodus of refugees began, Ms Suu Kyi condemned all human rights violations and promised to punish perpetrators.

But she did not address accusations of ethnic cleansing and did not criticise the army's actions. Her speech was described as “little more than a mix of untruths and victim-blaming” by Amnesty International director for the region, James Gomez.

Rohingya refugees – in pictures Show all 15 1 /15 Rohingya refugees – in pictures Rohingya refugees – in pictures A young girl and a baby wade through mud after arriving in Whaikhyang, Bangladesh from Burma on 10 September Dan Kitwood/Getty Images Rohingya refugees – in pictures Rohingya refugees walk through a camp in Whaikhyang, Bangladesh after arriving from Burma Dan Kitwood/Getty Images Rohingya refugees – in pictures A young Rohingya refugee gathers firewood after arriving in Whaikhyang, Bangladesh from Burma Dan Kitwood/Getty Images Rohingya refugees – in pictures Rohingya refugees wait for sacks of rice to be distributed in Whaikhyang, Bangladesh Dan Kitwood/Getty Images Rohingya refugees – in pictures Rohingya Muslim refugees arrive on a boat in Whaikhyang, Bangladesh after crossing from Burma on 8 September Dan Kitwood/Getty Images Rohingya refugees – in pictures Rohingya Muslim refugees react after being re-united with each other after arriving in Whaikhyang, Bangladesh on a boat from Burma Getty Rohingya refugees – in pictures Rohingya Muslim refugees walk along the remains of a road after arriving in Whaikhyang, Bangladesh on a boat from Burma Dan Kitwood/Getty Images Rohingya refugees – in pictures Rohingya Muslim refugees wade through water after arriving in Whaikhyang, Bangladesh by boat from Burma Dan Kitwood/Getty Images Rohingya refugees – in pictures Rohingya Muslim refugees wade through water after arriving in Whaikhyang, Bangladesh by boat from Myanmar Dan Kitwood/Getty Images Rohingya refugees – in pictures Rohingya Muslim refugees stand in the rain after arriving in Whaikhyang, Bangladesh by boat from Burma Dan Kitwood/Getty Images Rohingya refugees – in pictures Indian children hold placards and shout slogans during a protest against the alleged persecution of the Rohingya Muslims in Burma EPA/Raminder Pal Singh Rohingya refugees – in pictures Supporters of the Difa-e-Pakistan Council (DPC), an Islamic organisation, listen to their leaders' speeches against Burma's persecution of Rohingya Muslims, during a demonstration in Karachi Reuters/Akhtar Soomro Rohingya refugees – in pictures Hundreds of Iranians take part in a protest against violence in Myanmar after weekly Friday prayers, in Tehran EPA/Abedin Taherkenareh Rohingya refugees – in pictures Indonesian Muslim activists hold placards and shout slogans during a protest against the alleged persecution of the Rohingya minority in Magelang, Central Java, Indonesia EPA/Ali Lutfi Rohingya refugees – in pictures Members of an Islamic organisation shout slogans against the Burma government during a protest in Dhaka, Bangladesh EPA

A similar Freedom of the City award is being considered for withdrawal by Sheffield city council in the north of England, after residents submitted a petition last month.

The award will likely be reviewed by councillors this month, the council's democratic services team, which handles petitions, told Reuters.

Ms Suu Kyi's former college St Hugh's removed her portrait from public display last week.

Meanwhile Unison, Britain's second-largest trade union, announced last month it would suspend her honorary membership.

More than 400,000 people have called for the Ms Suu Kyi to be stripped of her Nobel Peace Prize, but the Nobel Institute said it was impossible to remove an award once it had been bestowed.