Suspicious, he sends his enforcer, Luca Brasi, to spy on them, but Brasi is murdered by Sollozzo, who then has Vito gunned down in the street, after which he kidnaps Hagen.
He sends his enforcer to spy on them. This is suspicious. Luca Brasi is his enforcer. Brasi is murdered by Sollozzo. Sollozzo then has Vito. This Vito is gunned down in the street. He kidnaps Hagen after the street.