WATCH: Sanders says he's 'sickened' by congressional baseball shooting
Sen. Bernie Sanders says the man authorities identified as opening fire on the Republican congressional baseball practice had apparently volunteered on his presidential campaign.
Sanders, an independent from Vermont who ran for president, says in a statement: "I am sickened by this despicable act."
He says that "violence of any kind is unacceptable in our society and I condemn this action in the strongest possible terms."
He paid tribute to Capitol Police for their response to the shooting, and said his prayers are with House GOP Whip Steve Scalise and others who were wounded.
Sanders challenged Hillary Clinton for the Democratic nomination in the 2016 presidential election.