A man killed himself while detonating explosives after trying to enter Brazil’s Supreme Court, authorities said Wednesday, in an attack on the political heart of the country that prompted the evacuation of court staff and legislators in the capital Brasilia.

The Supreme Court in recent years has become a target for threats by far-right groups and supporters of former President Jair Bolsonaro due to its crackdown on the spread of false information.

A man who failed in an attempt to break into Brazil’s Supreme Court killed himself in explosions outside the building Wednesday that forced justices and staff to evacuate, authorities said.