Swedish climate activist Greta Thunberg has been charged with disobeying a police order to leave a climate protest in the southern city of Malmo on June 19, according to the Sydsvenskan newspaper.

On the day of the incident, Thunberg wrote in an Instagram post that protesters had blocked the road for oil trucks in the port of Malmo.

“The climate crisis is already a matter of life and death for countless people. We choose not to be bystanders and instead physically stop fossil fuel infrastructure. We are reclaiming the future,” he had said.

If convicted of disobeying a police order, Thunberg can be fined or imprisoned for up to six months.

“You have the freedom to demonstrate, but you must not demonstrate in such a way as to cause disturbances to others,” prosecutor Charlotte Ottosen said, according to Sydsvenskan.

The press office of the Swedish central prosecutor’s office could not immediately confirm the report when contacted by Reuters for comment. Representatives for Thunberg could not be reached.