The assailant was shot by a third officer and later died of his wounds, authorities said. The attacker's identity and motive were not immediately known, Belgian Prime Minister Charles Michel said, but added the "first indications" suggested it was an act of terrorism.
"Thoughts are with the victims, their relatives and police officers," Michel posted on Twitter. The prime minister broke off his vacation in the south of France and was returning to Belgium for an emergency meeting of the government's National Security Council on Sunday.
Charleroi police spokesman David Quinaux said today's attacker carried the weapon in a sports bag, and pulled it out as he arrived at a security checkpoint outside police headquarters in the southern Belgian city just before 4 p.M. One of the two police, both of whom were described as experienced law enforcement officers, received several deep slashing cuts to the face, Quinaux said. The other was slightly wounded.
A third officer at the scene shot the attacker, who died of his wounds at a hospital, officials said.
Belgian Interior Minister Jan Jambon said it wasn't immediately clear whether the assault, which he denounced as an "act of barbarism" was the deed of a single person or something more elaborate.
"We don't know if this is the action of a lone wolf," Jambon told RTL. He said he had no information he could provide immediately on the identity or motivation of the attacker.
Belgium has been at Level 3 on a four-point terrorism alert scale since the attacks in Paris on Nov. 13 that killed 130 victims. Many of the Paris attackers, who pledged allegiance to the Islamic State group, lived in Belgium.
Paul Magnette, the city's mayor, said the checkpoint succeeded in preventing the machete-wielding man from reaching the building and causing more havoc. Magnette said that in the wake of the incident, Belgian authorities have begun discussing whether security for police facilities and officers should be reinforced further.
