C.B.
Probably in his mind the problem was already solved, why involve anyone else, even parents, in a possible already embarrassing situation. Perhaps he didn't want you to jump to any false conclusions or over react. He's a boy and boys often prefer to keep things to themselves - especially when the issue was solved and over in his mind. Relax. Being a Mom, I know that my boys sometimes felt that I over reacted to something they felt was petty and that I tried to solve too many of their problems. My youngest who just turned 25 still says to me at times, "Mom, you're being way too helpful." Relax, and enjoy the closeness and ability to sommunicate that you do share. Who knows, maybe your innocent son feels that he did something that may have triggered the attack and that he deserved what he got. If someone probes too deeply maybe he thinks that he will be punished too. There are too many possible issues that there is no way to track down each one. Just let it go and relax.
Carol B
Aboout me: I'm a mom of two sons who are now 25 and turning 27 next month. They still tell me only what they want me to know, even though we are quite close and talk quite a bit.