Yes, but his opinion says a lot about him. He's evidently willing to judge the case before the police have even completed the investigation. That's not wise.
A prominent politician should say some kind words for the victim's family, mention that he has trust in our legal system, and move on to something else. This showed poor judgement and citing the First Amendment doesn't change that.
I want to support Santorum as the viable opponent against Romney, but his stupid statements make me question his viability in the general election.