An attacker stabbed two police officers in Brussels on Tuesday and wounded a third in a suspected terror attack. An assailant stabbed two policemen in Belgium on Tuesday and wounded a third. No group has claimed responsibility for the incident and the suspect’s motivations are unknown, but it bears the hallmarks of an ISIS-style terror attack.

The attacker, identified as 43-year-old Belgian Hicham D., was shot in the leg and taken away by an ambulance, Reuters reports. Pieter Van Ostaeyen, a Belgian historian and expert on terror groups, tweeted that the attacker is a former military member who was previously known by police for his contacts with Belgian foreign fighters in Syria and Iraq.

Local TV in Belgium reports that the attacker stabbed one officer in the neck and another in the stomach, and broke the nose of a third policeman who arrived on the scene. Belgian officials are investigating the attack as a possible act of terror.

In March, three coordinated attacks by suicide bombers left 32 people dead in the Belgian capital — as well as the attackers. The explosions, at the city’s airport and a subway station, were later claimed by the Islamic State. The terrorists behind the 2015 massacre in Paris also had ties to Belgium — the attack was reportedly planned in Brussels, where several attackers lived.