The ashes of Heather Heyer, the anti-fascist activist killed in violence at a far-right rally in Charlottesville, were interred in a secret location to protect them from neo-Nazis.

Susan Bro, the mother of the 32-year-old who was killed after a car was driven into a group of protesters this summer, said her daughter's remains were buried at an unmarked, undisclosed, “completely protected” location.

Given the threats both she and her late daughter continue to receive, she said could not disclose the location for her own safety and that of the people who work at the facility.

Mr Fields now faces a charge of first degree murder (Provided by Albemarle-Charlottesville Regional Jail ) (Provided by Albemarle-Charlottesville Regional Jail)

“It’s a symptom of hate in society that you should have to protect your child’s grave, for Pete’s sake,” Ms Bro told the Daily Beast. “So, I’m protecting my child now.”

Ms Bro spoke out as charges against the man charged with killing her daughter were upgraded. At a hearing in the Virginia college town, James Fields, 20, from Ohio, was told he now faces a charge of first degree murder, which carries a potential punishment of life in prison.

Previously, Mr Fields was charged with second-degree murder, which carried with it a punishment of 20-40 years in prison. Mr Fields, who was attending a rally by far right groups protesting a proposal to remove the statue of a confederate general, is accused of driving a vehicle into group of people, injuring several and killing Ms Heyer on August 12.

Heather Heyer's mother: I "will not" speak to Trump

At the hearing, a video purporting to show Mr Fields driving his 2010 Dodge Challenger towards a crowd of protesters, was played to the court. It showed the vehicle stop, reverse, and then with with space to build up momentum, speed in the direction of the group of people.

It was the first time the video, captured by a restaurant’s security cameras, had been viewed publicly. Three of around 20 victims of the violence who were attending the hearing, shouted and asked to leave the courtroom as the video was played.

Mr Fields reportedly showed no reaction to the video or to testimony from those who were present that day.

Violence on the streets of Charlottesville Show all 9 1 /9 Violence on the streets of Charlottesville Violence on the streets of Charlottesville Protesters clash and several are injured White nationalist demonstrators clash with counter demonstrators at the entrance to Lee Park in Charlottesville, Virginia. A state of emergency is declared, August 12 2017 Violence on the streets of Charlottesville Trump supporters at the protest A white nationalist demonstrator walks into Lee Park in Charlottesville, Va., Saturday, Aug. 12, 2017. Hundreds of people chanted, threw punches, hurled water bottles and unleashed chemical sprays on each other Saturday after violence erupted at a white nationalist rally in Virginia. AP Photo Violence on the streets of Charlottesville State police stand ready in riot gear Virginia State Police cordon off an area around the site where a car ran into a group of protesters after a white nationalist rally in Charlottesville, Virginia AP Photo Violence on the streets of Charlottesville Militia armed with assault rifles White nationalists, neo-Nazis and members of the 'alt-right' with body armor and combat weapons evacuate comrades who were pepper sprayed after the 'Unite the Right' rally was declared a unlawful gathering by Virginia State Police. Militia members marched through the city earlier in the day, armed with assault rifles. Getty Images Violence on the streets of Charlottesville Statue of Confederate General Robert E Lee The statue of Confederate General Robert E. Lee stands behind a crowd of hundreds of white nationalists, neo-Nazis and members of the 'alt-right' during the 'Unite the Right' rally 12 August 2017 in Charlottesville, Virginia. They are protesting the removal of the statue from Emancipation Park in the city. Getty Images Violence on the streets of Charlottesville Racial tensions sparked the violence White nationalists, neo-Nazis and members of the 'alt-right' exchange insults with counter-protesters as they attempt to guard the entrance to Lee Park during the 'Unite the Right' rally Getty Violence on the streets of Charlottesville A car plows through protesters A vehicle drives into a group of protesters demonstrating against a white nationalist rally in Charlottesville, Virginia. The incident resulted in multiple injuries, some life-threatening, and one death. AP Photo Violence on the streets of Charlottesville Rescue personnel help injured people after a car ran into a large group of protesters after an white nationalist rally in Charlottesville, Virginia AP Photo Violence on the streets of Charlottesville President Donald Trump speaks about the ongoing situation in Charlottesville, Virginia from his golf club in Bedminster, New Jersey. He spoke about "loyalty" and "healing wounds" left by decades of racism.

In the aftermath of the incident, Donald Trump initially refused to condemn the white supremacists and neo-Nazis for the violence that happened. Instead, he said there was blame on “many sides”. On hearing his comments, Mr Bro refused to take a telephone call from the President.

Asked if the held Mr Trump responsible in any way for her daughter’s death, she told the Daily Beast: “I’m starting to come to that conclusion because he definitely pushes forward a hateful agenda.

“There are family members that will possibly not have anything to do with me for saying so. Many family members are strong Trump supporters, and continue to be so despite everything they see.”

Acquaintances of Mr Fields have said he had an obsession with Nazi Germany. At the hearing on Thursday, he wore a black-and-white striped jumpsuit and remained handcuffed and shackled. He did not speak.

The Richmond Times-Dispatch said his court-appointed lawyer, Denise Lunsford, did not dispute that her client drove the car into the mass of people.