I think the shooters thought Bruno Indelicato was going to be at that meeting with his father and were going to kill him there. No?

But then Sonny Red brought Frank Lino instead. Wasn't Lino the one who escaped? Then they wanted to kill Bruno because they believed he would try to avenge his fathers murder. At least thats what i read about it.

But i think the plan always was if they hit Sonny Red then Bruno had to go too.