As of now the shooting is over but it seems it was concentrated to one building on campus.
One Twitter post from the university says the shooting happened Tuesday morning at the Electrical Engineering Building on campus. That was at about noon Eastern time, according to the student newspaper, the Purdue Exponent.
Further posts from the university say police have a person in custody, though no details yet have been released.
Just before 1:40 p.m. Eastern, Purdue tweeted all but the Electrical Engineering Building could return to normal operations. Students in that building still should shelter in place, it said.