 However, without confessions — despite offers of plea deals to any suspects not directly responsible for the killings — and without direct physical evidence of the involvement of the suspects in the murders, the police were not able to effect an arrest.At the time, there was some speculation that the murders were tied to other crimes that had shocked the town over the preceding months, such as the murder of Julia Scyphers and the Speedway bombings.At the time the perpetrator of the bombings was still on the loose.