Some sources report that a demonstration against the government then took place near the scene of the tragedy, but the exact connection between the events has not yet been clarified. Grzegorz Cieslak, a security expert, told the media that the attacker's carbine was an AR-15, a long-barreled weapon that allows rapid fire but does not fire in bursts. Polish Prime Minister Donald Tusk called the incident a "tragedy" and an "attack" and said he was flying to Krakow.